Trelissick circular walk
  1. From the car park, follow the tarmacked track signposted "Woodland walks" departing from beside the information hut. Continue through the gate beside the cattle grid and turn left onto the gravel path to reach a crossing of paths.

    Trelissick was first recorded in 1275 and the name means Leidic's Farm. A villa was first built in the 1750s and both the house and gardens were extended during the 19th Century first by Thomas Daniell - from a hugely wealthy mining family, but subsequently bankrupt through gambling - and then by Carew Davies-Gilbert - a wealthy Victorian plant-hunter who added the second floor and greatly developed the garden. During the 20th Century the estate was bought by the director of Harrods and inherited by Florence Nightingale's second cousin before being donated to the National Trust in 1955.

  2. Continue ahead at the crossing to follow the path downhill to reach a gate across the path.

    The River Fal begins in the marshes of Goss Moor at Pentevale and runs for 11 miles to its mouth between St Anthony Head and Pendennis Point. It is little more than a stream passing through the china clay areas near St Stephen and a fairly small river at Grampound and Tregony. At Ruan Lanihorne, the river enters the huge flooded river valley forming the creek system known as Carrick Roads. Within this, it is the former river valley of the Fal which separates the Roseland peninsula from the neighbouring land.

  3. Go through the gate and follow the path to reach a gate marked "Woodland Walk".

    The name "Carrick Roads" is thought to be a mangling of the Cornish Karrek Reun meaning "seal rock". It is now known as "Black Rock" and located in the centre of the harbour entrance, between Pendennis Point and Carricknath Point, and marked with a large conical beacon. It is still used at low tide as a haul-out spot by seals.

  4. Go through the gate and follow the path for just under half a mile until you reach a sign for the ferry just before a junction of paths.

    The King Harry Ferry was established in 1888 to connect the Roseland Peninsula with the Truro area and is one of only five chain ferries in England. The alternative route is a 27 mile road journey through Truro and Tresillian. The ferry carries more than 300,000 cars a year and it has been calculated that each year this saves three quarters of a million litres of fuel, and 1700 tonnes of carbon dioxide from being released into the atmosphere.

  5. After the ferry sign, continue on the path marked "Woodland walk" and follow the path down the steps to the road.

    There is an entrance into the gardens through the lodge ahead so you can break off from the walk for some garden-visiting at this point as well as at the end.

  6. Cross the road to the section of wooden fence opposite and follow the path up the steps. Continue for just over half a mile until you reach a fork in the path with Roundwood Fort and Quay to the right and Trelissick to the left.

    Most primroses tend to be pale yellow but in residential areas, extensive hybridisation occurs with pink and purple garden primulas to create all kinds of weird and wonderful mutants, with some even shaped like cowslips. However, there is a pale pink variety of primrose (known as rhubarb and custard) that is thought to be a naturally-occurring variant of the pale yellow (rhubarb-free) version as it has been found miles away from any domestic plants.

    The berries of holly contain a chemical compound very similar to caffeine. Only in very small doses is this a stimulant; in larger doses it is toxic. It is for this reason that you see holly berries on bushes rather than being inside the nearest bird. The birds have learned to wait until after the frosts have reduced the toxicity of the berries before eating them.

    Holly is able to adapt to a range of conditions but prefers moist ground. It is very tolerant of shade and can grow as a thicket of bushes underneath larger trees. However, given the right conditions, holly trees can grow up to 80ft tall!

  7. Keep right at the fork, signposted to Roundwood Fort, then after crossing the stream bear right onto the path marked with a pink arrow. Follow the path over the bridge and to a junction of paths with a Round Wood NT sign on a standing stone.

    The upper part of the Carrick Roads estuary provides an important habitat for oysters.

    Native oysters rarely produce pearls (Pearl Oysters live in warmer seas) although all molluscs theoretically can and most would be tiny. The commercial value from native oysters comes from eating them and it takes around 4-5 years for an oyster to reach full size.

  8. Follow the path ahead through the gap in the wall into the woods. Follow the path to where the main path forks with a chain fence on the right-hand path.

    Roundwood fort consists of twin ramparts and ditches, located on the promontory between Cowlands Creek and Roundwood Creek. It is thought to date from the late Iron Age from around 350 BC.

  9. Bear right at the fork onto the chain-fenced path. Follow this path to a reach flight of steps.

    Roundwood Quay, located at the junction of Lamouth Creek and Cowlands Creek, was built in the 18th Century and was in active use until some time in the 19th century. It was used to export locally-mined tin, and copper to the smelters in South Wales. Tin was smelted nearby and lime kilns were built later. Ships of up to 300 tons could berth alongside the quay at the lowest tides.

  10. Descend the steps, turn left (or you can explore the quay to the right first) and walk towards the house through the parking area to a gate onto a track passing the house. Follow the track to reach an opening on the left with an upright granite post in the centre, just after a gate on the left.

    The track is a byway.

    Public byways are rights of way down which motor vehicles may be driven depending on how brave you are and how expensive your car is to fix. You are also permitted to use a horse-drawn carriage, should you own one. Byways tend to be surfaced in an ad-hoc manner either with gravel or occasionally with a smattering of tarmac, but still leaving plenty of room for a good crop of grass to grow down the centre. They are conventionally marked using red waymarks or a "Public Byway" sign. There are 130 miles of byways in Cornwall.

  11. Go through the gap with the granite post and then between the wooden posts. Turn right and follow along the edge of the field to reach a post with a pink waymark, just before a gate.

    Willow trees are usually found in wet places including riverbanks and waterlogged ground. Common species include grey willow and goat willow but these often hybridise so they are more often known by the more broad-brush collective term "pussy willows" (due to their catkins). In January the fluffy, grey male catkins appear and and turn bright yellow in March when they release their pollen. Then in April, the fertilised female catkins develop into woolly seeds. In early May, air can be filled with the downy seeds that look a bit like dandelion seeds.

  12. Go through the pedestrian gate beside the gate and then through the one on the opposite side of the track. Once in the field, bear left to the gateway with a granite post and go through this, then follow along the left hedge, parallel to the track, to reach an information board and gate.

    The sign on the post mentions Kea Plums at Cowlands Creek - this is on the Coombe and Old Kea walk.

    In the late 20th Century, the Kea Plum was largely forgotten. A number of trees still grew in back gardens in Coombe but the fruit was just used by tenants living in the cottages. In the 21st Century, interest in reviving heritage varieties of fruit and veg has generated a market for the Kea Plum. Residents were contacted by the Tregothnan Estate to inform them that their fruit belonged to the estate who now once again collect the plums each year. Tregothnan sells Kea plum jam and frozen plums online and is working on making the area a Protected Designation of Origin.

  13. Go through the gate and turn right onto the track. Follow this until it ends on a lane.

    Goldfinches are colourful small birds, often seen in small groups. In the wild, they pluck small seeds from plants such as thistles so have adapted easily to bird feeders containing small seeds such as niger seeds.

    Due to their attractive coloration and pleasant song, many were trapped in Victorian times and sold as caged birds. However, it was found that if they were kept with canaries, their song would change to mimic that of a canary which Victorian Society considered undesirable. One of the first campaigns by the Society for Protection of Birds (formed in 1891, which later became the RSPB) was against the trade in these birds.

  14. Turn left onto the lane and follow it a short distance until you reach a track on the left marked as National Cycle Route 3.

    National Cycle Route 3 runs 338 miles from Bristol to Land's End. The route is a mixture of lanes, byways and some tracks not open to road traffic including the upper section of the Camel Trail from Wenfordbridge to Dunmere.

  15. Turn left onto the track and follow this over a stream to reach a gate on the left.

    Celandine flowers close each night and open each morning. This is controlled by a circadian rhythm, so they really are "going to sleep" at night and "waking up in the morning". It is likely that this has arisen to protect the internals of the flowers from any frost during the night as they begin flowering in March when frosts are still common.

    Navelwort grows along the track, particularly in the shady spots on the right.

    Navelwort produces flower spikes with small green bells from June to September. When the flower spike is first forming, it is a rather beautiful structure and is a perfect subject for macro photography.

  16. Go through the pedestrian gate beside the gate on the left and follow the path alongside the stream to the crossing that you encountered earlier on the walk.

    When photographing bluebells, the flowers that look blue to your eye can end up looking purple in photos.

    The first thing to check is that your camera isn't on auto white balance as the large amount of blue will cause the camera to shift the white balance towards reds to try to compensate.

    Another thing to watch out for is that the camera's light metering will often over-expose the blue slightly to get a reasonable amount of red and green light and the "lost blue" can change the balance of the colours. You can get around this by deliberately under-exposing the photo (and checking there is no clipping if your camera has a histogram display) and then brightening it afterwards with editing software.

    The name for ash trees comes from æsc - the old English word for spear. This comes about because ash is one of the toughest hardwoods and absorbs shocks without splintering. This also made it a good backup material for longbows when yew wasn't available. It is still used for making tool handles and sports equipment, including hammers, axes, spades, hockey sticks and oars.

  17. Cross the stream and then turn right when you reach the junction, signposted to Trelissick. Follow the zig-zag path to emerge via a gate onto a road.

    Bracket fungi can be recognised by tough, woody shelf-like growths known as conks. Some species can live for a very long time and are often coloured with annual growth rings.

  18. Carefully cross the road to the gate opposite and go through this. Continue ahead to pass the track on the right and reach the front of the Old Lodge. Of the remaining 2 paths ahead, follow the right-hand path until it ends on a tarmacked drive.

    Trelissick Garden evolved during Victorian times and it still looks broadly today as it did in the 1870s. Trelissick is the home of the National Plant Collections of photinias and azaras and much of the plant collection was established in the 1930s. The Orchard was replanted relatively recently, in the 1990s, to recreate the original Trelissick orchard and has over 70 old varieties of Cornish apple with names such as Pig's Snout.

  19. Turn left onto the drive and follow it until you reach a junction of surfaced paths.
  20. Turn left at the junction to return to the car park, café, house and gardens.

    The Water Tower at Trelissick was built in 1865 in Victorian over-engineering style as a water reservoir for the house. Its height was designed to provide high enough water pressure to fight fires effectively, which were clearly of concern. It has since been converted to a holiday cottage with one circular room on each of four floors connected by a narrow spiral staircase.

The blackbird is a species of thrush. The name "blackbird" is mediaeval, first recorded in 1486. Since most of the crow family is also black, plus many seabirds, the choice of this particular species for the name is thought to be due to its size. Up to the 18th Century, larger birds such as crows were referred to as "fowl" and the term "bird" was only used for smaller species.

The Old English name for the blackbird was osle and up to the 17th Century this survived as in alternative names for the blackbird ranging from ouzel to woosel. One of these is used in A Midsummer Night's Dream by Shakespeare: "The Woosell cocke, so blacke of hew, With Orenge-tawny bill".

Only male blackbirds are actually black. The females are brown. The difference in appearance between males and females is known as sexual dimorphism and is an evolutionary strategy by the males to get noticed more by females at the cost of decreased chances of survival.

Blackbirds can be found in deciduous woodland, particularly where there is dense undergrowth. In the man-made landscape, hedges provide plenty of dense undergrowth and have consequently become a really important habitat for blackbirds. Moreover, many gardens have such a high density of hedges and bushes that they are able to support ten times the blackbird population versus an equivalent area of their natural woodland habitat.

Blackbirds are one of the most common birds in the UK with a population of somewhere between 10 and 15 million. However, blackbirds were in steady decline from the 1970s through to the mid-1990s. The population has only relatively recently recovered.

Blackbirds begin singing from around the end of January but it is normally the overkeen young males initially - the older, wiser males wait until March, pacing themselves for the singing period which continues into the early summer. Blackbirds have been shown to sing more during and after rain but exactly why is not yet known.

Baby blackbirds usually leave the nest before they can actually fly then hop and scramble through the bushes. Their parents watch over them so don't attempt to rescue them.

Blackbirds in the UK are resident all year round but the blackbirds that live further north (e.g. in Norway) migrate south for the winter. To help with migration and also to avoid being eaten by predators, blackbirds can sleep half their brain at a time. This allows them to get some rest whilst still maintaining enough alertness to fly or spot predators.

The reference in the nursery rhyme "sing a song a sixpence" to "four and twenty blackbirds baked in a pie" is thought to be to the 16th Century amusement (though not for the blackbirds) of producing a large pie which included an empty chamber. After the pie had been baked and was ready to be served, a trapdoor would be cut in the empty chamber and live birds were placed inside which would fly out when the pie was cut open. Live frogs were sometimes used as an alternative.

In the Christmas carol "The Twelve Days of Christmas", the line "four colly birds" is thought to be from 18th Century slang meaning "black as coal" and was a popular nickname for the blackbird. Whilst many people today sing and write "four calling birds", this is thought to be a modern misunderstanding of what was originally written.

Squirrels are rodents, closely related to chipmunks and slightly more distantly to dormice. The word "squirrel" originates from an ancient Greek word meaning "shadow-tailed", referring to the bushy tail of a squirrel. A family group of squirrels is known as a "drey" (also the word for a squirrel nest). A group of unrelated squirrels is known as a "scurry", though squirrels tend not to hang out in groups.

Grey squirrels were introduced to the UK from the USA in the late 19th Century and within decades they had replaced the native red squirrel in most parts of the country.

Compared to red squirrels, grey squirrels are able to eat a wider diet (including acorns), are larger so can survive colder winters, and are better able to survive in the fragmented habitats created by urbanisation. They are also thought to be carriers of a squirrel pox virus which they usually recover from but has been fatal to red squirrels, although red squirrels are now also developing some immunity.

To date, culling of grey squirrels has not reversed their domination of woodland habitat and alternative approaches such as planting food with contraceptives are being explored as a means to control the population. The theory is that infertile squirrels can compete for food against fertile squirrels, whereas culling can create a glut of food resulting in a higher number of squirrels surviving which replace those that were exterminated. Natural predators such as goshawks or pine martens also remove more grey squirrels than red squirrels. This is because red squirrels are more savvy having co-evolved with the predators so for example they recognise the scent of pine martens and actively avoid areas with this.

Squirrels assess each of their acorns before burying them. If an acorn is too light (which suggests it might have a hole), the squirrel will eat it immediately rather than risking it going mouldy.

In order to later find the nuts that they've buried, squirrels need to be organised. Some species of squirrel have been studied and found to structure their hoards by type of nut e.g. burying all their acorns under one tree and all their conkers under another. This is equivalent to us organising all the veg onto one shelf of the fridge to make it easier to remember where to look for them.

As well as forgetting where they buried some of them, squirrels may also lose a quarter of their buried food to birds, other rodents and fellow squirrels. Squirrels therefore use dummy tactics to confuse thieves by sometimes just pretending to bury a nut.

Squirrels eyes are positioned on the sides of their head which allows them to spot predators approaching from behind them. When a squirrel spots a predator, its runs away in a zigzag pattern. This confuses many of their predators but unfortunately it doesn't work well for cars.

Young squirrels suffer a high mortality rate in the wild and less than one in three make it to adulthood. The ones that do, live on average for about 6 years, although a lucky one can live to about 12 years old. In captivity, where there are neither predators, cars nor cold winters to contend with, they can reach 20 years old.

By using their tail as a parachute, squirrels are able to survive falls from high trees. This allows them to attempt risky jumps between treetops that don't always work out. They are one of the few mammals that can (but not always) survive an impact at their terminal velocity i.e. if a squirrel jumped out of an aeroplane, it may well survive.

In urban areas in cold countries such as Canada, a black form of the grey squirrel is more common which is able to withstand the cold better both by retaining more heat and also having a slower metabolism. In wilderness areas where predators are more common, the black squirrels don't seem to do so well, perhaps because they are less camouflaged against trees than the grey ones.

Green woodpeckers are the largest and most colourful of the woodpeckers native to Britain and have a distinctive laughing "yaffle" call. The two species of spotted woodpecker are smaller and usually noticed from the drumming sound they make on trees although they can sometimes be heard making a short "cheep" sound. They are quite shy of humans but can sometimes be seen on garden bird feeders containing fat balls or peanuts.

Of the spotted woodpecker species, the sparrow-sized Lesser Spotted Woodpecker is now not very common. Greater Spotted Woodpeckers are starling-sized and have a white patch at the top of their wings which Lesser Spotted Woodpeckers don't have. Male Greater Spotted Woodpeckers can be recognised from the red patch on the back of the head. Mature female Greater Spotted Woodpeckers don't have a red mark on the head but have the red rump. Juvenile Greater Spotted Woodpeckers have a red mark at the front of their head which can lead to confusion with Lesser Spotted Woodpeckers.

All of the woodpeckers bore holes in trees in which they nest, but only the spotted woodpeckers drill into trees in search of food, spending most of their time perched on a tree. Conversely, green woodpeckers spend most of their time on the ground, hunting for ants. The ants nests are excavated using their strong beak, and then ants are caught on the barbed end of their long tongue. In fact, their tongue is so long that it needs to be curled around their skull to fit inside their head.

Ferns evolved a long time before flowering plants and dominated the planet during the Carboniferous period. The bark from tree ferns during this period is thought to have been the main source of the planet's coal reserves.

Fern fronds form in a coil (known as a crozier or fiddlehead) with the delicate tip protected in the centre. As the outer parts begin to photosynthesise, the sugars they produce cause more water to be drawn into the leaf, causing it to expand and gradually unfurl.

Ferns produce 2 different types of leaf (although they often look quite similar). The normal leaves are used for photosynthesis of sugars just like in other plants. Ferns also produce a special kind of spore-bearing leaf which can often be identified from the dots on the underside. In hart's tongue ferns, these are really obvious.

Ferns produce neither flowers nor seeds and rely on the tiny spores for their reproduction which are most commonly distributed by the wind. This allows them to colonise some quite random places such as rocky ledges that heavier seeds might not reach. Since the spores come from just one parent fern, the offspring is a genetic clone.

The spore from a fern doesn't grow into a fern. Instead it grows into an organism resembling a liverwort (i.e. a small green blob). Instead of producing spores, these produce eggs and also sperm which they interchange with neighbouring blobs to get a new mix of genes. The fertilised egg grows into a new fern and so this alternating process of ferns and blobs repeats.

Mosses are close relatives of the first plants to colonise the land 500 million years ago. They descended originally from freshwater algae but evolved an outer coating that protected them from the temperature changes and UV radiation that made life on the land more of a challenge than in the water. There are now estimated to be over 10,000 species of moss.

Mosses reproduce with tiny spores rather than seeds. Many mosses use wind to carry their spores and produce tiny stalks with the spore-releasing equipment on the top in order to catch the wind - these can be seen as thread-like structures standing up from the moss. These spore-releasing devices often have a ring of teeth around the edge (visible with a magnifying glass) to control the release of the spores, allowing them to be released gradually over a period of time to catch gusts of wind of different speeds and in different directions.

Sphagnum (peat) mosses use compressed air to launch their spores. To get an idea of the acceleration that the spores are launched with, an astronaut in a rocket launch experiences an acceleration g-force of about 3 g and the maximum in a fighter jet is about 9 g. Sphagnum moss spores are accelerated at 36,000 g!

Mosses don't have roots but instead have little rootlets known as rhizoids. Since there is no need to root into soil, mosses can grow on stones, tree trunks, buildings etc. This together with their wind-carried spores makes them excellent colonisers of barren land. The buildup of organic material from dead moss then provides an environment that other small plants can start to colonise.

Mosses' lack of deep roots mean they need to store their own supply of water during dry periods which is why they are found in shady places that are not dried-out by the sun. This also applies to moss on trees - it rarely grows on the south-facing part of the trunk which can be used as a crude form of compass when navigating.

Some mosses are able to absorb 20-30 times their own weight in liquid. Moss was used in several ancient cultures as nappies: babies were carried in a moss-lined bag to prevent leaks. Moss has also traditionally been used to line hanging baskets which are very prone to drying-out. Areas of moss help to protect soil from erosion by runoff and rivers from sediment and flooding by capturing rainfall and giving it chance to soak slowly into the soil.

1000 Millennium Mileposts were funded by the Royal Bank of Scotland for the National Cycle Network. The cast iron signposts come in four designs:

In tidal rivers, the discharge of freshwater and friction with the riverbed effectively "holds back" the rising tide. The further up the tidal region of the river, the shorter the interval between low and high tide and the faster the rising tide comes in when it eventually does.

The "National Trust for Places of Historic Interest or Natural Beauty" was founded in 1895 when snappy names weren't in fashion. Their first coastal acquisition was Barras Nose at Tintagel in 1897. Five years later, Tintagel Old Post Office was their first house to be acquired in Cornwall. The National Trust now owns over 700 miles of British coastline.

The National Trust now has over 4 million members and is the largest voluntary conservation organisation in Europe. In the UK, the National Trust has more members than all the political parties combined and the only organisation currently larger at the time of writing is the AA.

National Trust cafés serve around 4.5 million cups of tea per year which is enough to fill an Olympic swimming pool.

The National Trust owns 250,000 hectares of land, of which 10% is currently woodland. The organisation has made a commitment to increase this to 17% by 2030 by planting 20 million trees.

The National Trust is the largest owner of farms in the UK. It has around 2,000 tenants and over 600,000 acres of land. It has been calculated that 43% of all the rainwater in England and Wales drains through National Trust land.

The National Trust maintains a network of around 15,000 miles of paths on their land, roughly a quarter of which are public rights of way and the remaining majority are permissive paths.

The grey heron is an unmistakably massive bird with a 6ft wingspan and yet weighs in at only 1-2kg. The call of the heron is equally unsubtle - a loud croaking "fraaank" noise that is more like grating metal than the sound of birdsong. Herons are most commonly seen in or near freshwater where they hunt for fish. The number of breeding herons has been steadily growing in the UK due to mild winters as they struggle to feed during cold weather when ice forms a barrier on the surface of water.

Although herons primarily eat fish, they will eat frogs, rodents, moles, ducklings and even baby rabbits! They are quite brave birds and will venture into gardens and parks to eat the ornamental fish. They have also been known to visit zoos to steal fish during penguin and seal feeding.

Herons nest in tree-top colonies known as "heronries" where they make a large nest from twigs. It is not unusual for a single tree to contain as many as 10 nests and the overall colony can reach over a hundred nests. The herons re-use their nest for as many years as possible until it gets blown away by a storm. It is unwise to stand beneath a heronry as the birds defend their nests by regurgitating half-digested fish on those below!

In mediaeval Britain, roast heron was a prized dish reserved for aristocratic banquets. In Tudor and Elizabethan times, hunting herons with peregrine falcons was considered a royal sport which resulted in the population being protected from peasants who might otherwise have caught and roasted them.

The English surnames Earnshaw and Hernshaw originally meant "heron wood" and the surname Herne is also a corruption of Heron.

The little egret - a white member of the heron family - can be seen on many of the creeks in Cornwall and yet is only a very recent settler in Britain. The birds first appeared in Britain in any number in 1989 and the first to breed was in 1996 in Dorset.

Ivy is a creeping vine which is well-known for being able to climb up almost anything. With good support, an ivy plant can climb as high as 90ft. A plant can live over 400 years and on mature plants, stems can reach a diameter of over 10cm.

Ivy has two types of roots. The "normal" roots extend into the soil and collect nutrients. At intervals along the climbing stems there are also aerial roots which attach the plant to a surface. As they come into contact with a surface, the roots change shape to anchor the plant. They then produce hairs that wedge into any crevices. The roots also exude a chemical compound which acts as a glue.

There are two types of ivy leaf. Those on creeping stems are the classic ivy leaf shape with 3-5 triangular lobes - they grow towards shade to find a tree to climb up. However, more mature ivy plants grow aerial shoots with a completely different (teardrop) leaf shape. These are the shoots that bear the flowers and fruits and are typically located in a sunny spot such as on an upright ivy bush or top of a rock face. The reason for the different shapes is that the larger, multi-lobed leaves are able to catch more light in shady areas whereas the smaller, stouter leaves are more resistant to drying out.

Since the multi-lobed leaves are found in shade, whist the teardrop leaves are found in sun, this allows the leaves of ivy plants growing up trees to be used as a compass. Unless something is in the way then the sunniest side of a tree is to the south and the shadiest is to the north.

Ivy is rarely a threat to healthy trees. Ivy is not a parasite. Since it has its own root system, it absorbs its own nutrients. It simply uses a tree for support. The main risk to trees is during strong winds when the surface of the ivy can act as a sail which, together with the extra weight from the ivy, can cause a tree to fall.

The effect of ivy on buildings is controversial as it depends a lot on the properties of the surface it adheres to. The rootlets wedge into any cracks in the surface and so on surfaces that are fragile, ivy will cause damage. A study for English Heritage found that on hard, firm surfaces, ivy did little damage. The blanket of leaves was also found to have beneficial insulating effects and protect the masonry from water, salt and pollution.

Ivy is unusual in that it flowers particularly late in the year - from September to November - and therefore provides vital nectar for insects such as bees and moths. Ivy berries are an important winter food source for birds and will remain on the plant all the way through the winter until spring. The berries also have a high fat content so provide a dense source of energy at a time when animals need lots to keep warm.

Extracts from ivy were used in herbal remedies and still form the basis of some modern-day cough medicines. It is said to have both antibacterial and antiviral properties. A study for English Heritage also found that roadside ivy absorbed particulates from the atmosphere which may lead to its use in improving air quality.

Compared to many native trees, the beech colonised Great Britain relatively recently, after the last Ice Age around 10,000 years ago. Beech trees have a shallow root system and are therefore often found in areas where water is plentiful such as near rivers. In the 17th and 18th Centuries, tall, stately beech trees were very fashionable in the estates of wealthy landowners and many mature beech woodlands today are the result of 18th Century parkland landscaping projects.

Beech trees can live up to 400 years but the normal range is 150-250 years. Beech trees respond well to pruning and the lifetime of the tree is extended when the tree is pollarded. This was once a common practice and involves cutting all the stems back to a height of about 6ft during the winter when the tree is dormant. The 6ft starting point kept the fresh new growth out of the range of grazing animals. When allowed to grow to full size, a beech tree can reach 80ft tall with a trunk diameter of around 3ft.

The word "beech" is thought to have the same origins as "book" as beech (most probably the bark) was used as a writing material in which to carve runes by Germanic societies before the development of paper. This is still apparent in modern German where the word for "book" is buch and "beech tree" is buche.

The fruit of the beech tree is known as "mast" or, less cryptically, "beechnuts" and these are not produced until the tree is 40-60 years old. The small triangular nuts are encased in spiky husks which split and drop from the trees from late August to early October. The kernels of these are edible and are similar to hazelnuts. They were once used as a source of flour, which was ground after the tannins had been leached out by soaking them in water. If you find them too bitter, you might want to try this trick, although toasting them in a hot pan is also a good option.

Young beech leaves can be used as a salad vegetable, which are described as being similar to a mild cabbage, though much softer in texture. Older leaves are a bit chewy, as you'd expect.

Beech bark is very delicate and does not heal easily. Consequently some graffiti carved in beech trees is still present from more than a century ago. This is a practice that should be strongly discouraged as it permanently weakens the tree, making attack by insects more likely which can prematurely end its life.

Beechwood ageing is used in the production of Budweiser beer but beech is not the source of flavour. In fact beechwood has a fairly neutral flavour and in the brewing process it is pretreated with baking soda to remove even this. The relatively inert strips of wood are then added to the fermentation vessel where they increase the surface area available for yeast. It is the contact with yeast that produces the flavour in the beer, not the beech itself.

Beechnuts can be used very effectively as a thrifty alternative to pine kernels to make pesto. Collect one trouser pocketful of beechnuts. Shell them over a large cup of tea with a friend, toast the kernels over a medium heat in a dry pan, then grind with a pestle and mortar (surprisingly easy once toasted). Chop 4 sprigs of basil each about the size of your hand - roughly half a supermarket pack. Add to this a finely chopped small clove of garlic and a good pinch of salt and freshly ground black pepper. Then shave (with a peeler) or grate a lump about the size of the end of your thumb of some hard salty cheese such as Pecorino or Parmesan (a supermarket basic range imitation will do fine). Finally add a good slug of extra virgin olive oil and it's time to say "proper job". It makes a ramekin full which doesn't seem a lot but it is so packed with flavour that it goes a surprisingly long way.