Ladock woods are owned by the Duchy of Cornwall. During the 19th Century the woods were coppiced; by cutting the trees down to a stump and allowing them to regrow, straight poles of oak or ash could be produced. During the 20th Century, the woods were planted with conifers. From the mid-1980s, broadleaf species were introduced including cherry, chestnut, beech and lime. In 1997, the Duchy committed to forestry principles which rely, wherever possible, on nature to achieve sustainable and diverse woodlands.
For many centuries, it was traditional for landowning families to create trusts from the land and assets so future generations could live off the income, but were unable to dispose of the assets so these would be available for future generations. The Duchy estate is an example of this and was created in 1337 by Edward III to provide his son (and future Princes of Wales) with an income. Consequently, unlike other Royals, the Prince of Wales and his family are not paid for by the taxpayer via the Civil List; instead their living costs and all their charitable activities (such as The Prince's Trust) are funded by income from the Duchy estate.
Only 13% of the Duchy land is in Cornwall; the rest is dotted over 23 other counties with some in London but most is in the South West of England, with nearly half on Dartmoor.
Some of the most mature broadleaf trees in the woodland occur alongside the path here. Over time, more of the smaller broadleaf trees will grow up to replace the conifers as they are gradually removed.
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.
Rosebay willowherb is a tall plant with a spike of pink flowers in late summer which can often be seen beside paths and tracks. Their long leaves have a distinctive thin, white vein along the centre.
It is a pioneer species which is good at colonising disturbed ground as its seeds travel long distances in the wind and remain viable in the soil for many years. It was considered a rare species in Britain in the 18th century but spread along the corridors cleared for railways in Victorian times.
When a tree is injured, it exudes resin - a thick, sticky liquid which hardens and seals up the wound. The resin also contains anti-fungal and insecticide chemicals to protect it from parasites and pathogens. Frankincense and myrrh are both examples of resins.
Blobs of resin from conifers can fossilise along with the trees themselves in low oxygen environments to form amber. Over time, the volatile organic compounds that make the resin sticky are lost as the molecules left behind join up into polymers. After a few million years, the result is something very similar to a hard piece of clear plastic. Amber's ability to survive for hundreds of millions of years also suggests that man-made plastics created from organic polymers could persist in the environment a very long time.
Conifers can produce an economic yield of timber up to 6 times faster than broadleaf trees. Imported species such as Douglas Fir and Sitka Spruce are amongst the more common used for timber production.
The scent of conifer trees mostly comes from volatile organic compounds known as terpenes. Two of the most well-known are limonene (which as its name suggest has a citrus scent) and pinene which advertisers describe as "pine fresh". In fact there are 2 versions of the pinene molecule with the same chemical formula but with a hydrogen atom in a slightly different place. The "alpha" version smells slightly more of pine and is soluble in alcohol and slightly in water. The "beta" version smells more of turpentine and is only soluble in hydrocarbon solvents (e.g. white spirit) so for both reasons is less useful for scented cleaning products and air fresheners than the alpha form.
To support their massive weight, trees produce a biochemical compound called lignin which has a cross-linked polymer structure that makes it very rigid. Because it's so tough, most fungi and bacteria are unable to break it down. The main fungus that has worked out a way to do it is known as white rot.
The formation of most of the world's coal deposits from wood occurred during a single geological period suitably-named the Carboniferous. It was postulated that this might be because white rot hadn't evolved by then so dead wood just accumulated. However, it's now thought more likely to be due to the formation of particularly deep swamps from the crust-buckling collisions of tectonic plates in this period which allowed wood both to accumulate in a low-oxygen environment and then be compressed into coal.
Pheasants are often encountered on the lanes and in the surrounding fields.
The pheasant is named after the Ancient town of Phasis (now in West Georgia) and the birds were naturalised in the UK by the 10th Century with introductions both from the Romano-British and the Normans. However, by the 17th Century they had become extinct in most of the British Isles.
In the 1830s, the pheasant was rediscovered as a game bird and since then it has been reared extensively for shooting. The pheasant has a life expectancy of less than a year in the wild and it is only common because around 30 million pheasants are released each year on shooting estates.
The settlement of Trendeal was first recorded in 1201 with the name Dintel. It is thought the dyn, meaning "fort", in the name may refer to an earthwork which may have once existed in the field on the right. The field was also recorded with the name "Castle Moor", which supports this.
Trelassick was also recorded in mediaeval times, spelt Treloysech in 1279. It is thought that both settlements predate the Norman conquest as their names contain elements from the Cornish language that were used in place names from the early mediaeval period.
During Victorian times, the building of railways allowed primrose flowers picked in the Westcountry to be on sale in London the next day. Picking was done on a large scale but eventually became unfashionable, being seen as environmentally destructive. However all the evidence gathered suggests as long as the flowers were picked and the plants were not dug up, the practice was sustainable.
An acre is a unit of area dating back to mediaeval times, based on the amount of land that could be ploughed with a yoke of oxen in one day. It was standardised in 1824 as a rectangle of 4 rods (66 feet) by one furlong (660 feet). The 10:1 "letterbox" aspect ratio comes from the long, thin field shapes in mediaeval times to minimise the awkward process of turning the oxen around. In fact the name "furlong" comes from the Old English for "one furrow long". The acre has since lost its prescribed shape and now just means 43,560 square feet.
The classification of Public Bridleway vs Footpath was made in the National Parks and Access to the Countryside Act 1949. However, many bridleways were wrongly recorded as footpaths, possibly in some cases in attempts to shirk the greater level of maintenance responsibility needed for bridleways. The British Horse Society has been working on getting some of these recording errors corrected.
Some plant nutrients such as phosphorus tend to be more abundant near the surface of the soil where decaying organic matter collects. Bluebell seedlings start life at the surface so these are OK but as bluebell plants mature and send their roots deeper into the soil to avoid winter frosts, they have a phosphorus problem. They have solved this by partnering with a fungus that extends from their root cells, drawing in minerals from the soil in return for some carbohydrates from the plant.
Wood pigeons are one of the birds you're likely to encounter here.
There is no biological distinction between "pigeon" and "dove" although "dove" seems to now be used for the more elegant species and "pigeon" for the more unexciting ones. Due to the Norman ruling classes, it's relatively unusual in the English language for the French/Latin word to be the vulgar form and the Norse/Germanic word to be the "posh" form. It's is likely that the reverse was true in mediaeval times: pigeon meat was considered super-posh and the French word was used for the young, tender birds of the species that were eaten.
Buzzards can often be seen circling over the valley.
A large proportion of buzzards diet is earthworms and carrion and consequently they have a reputation for being lazy and scavengers. However, when they need to be, buzzards are formidable predators. Diving on rabbits and small mammals from a slow or hovering flight, or from a perch, they nearly always make the kill on the ground.
Just before the gate are some overgrown remains of buildings on the left. These were stone-and-cob cottages in the settlement known as Bessigga which is reported as being abandoned in the 1960s and has since fallen into ruin.
Cow parsnip can be mistaken for giant hogweed as the leaves are similar in shape and flowers look similar. The most obvious way to tell them apart is size. Cow parsnip reaches a maximum of 6-7 feet tall whereas even by the end of May, giant hogweed is massive and can reach 15ft tall by July. Another distinguishing feature is that cow parsnip has a groove in the top of the stem holding each leaf but you should not touch the plant to examine it.
Giant hogweed is regarded by some as the most dangerous plant in the UK (although hemlock is also a good contender). If you encounter giant hogweed, avoid touching it and children and dogs should be kept away from it as the sap contains a chemical which is extremely phototoxic. When activated by sunlight, this binds to the DNA in skin cells and kills them. Skin reaction starts as an itchy rash and can develop into third degree burns and scarring. It also makes the affected areas susceptible to severe sunburn for several years.
The plant gets its name as it can grow more than 10 feet tall, topped with white umbrella-shaped flowers. Due to the similar style of flowers, it is also known as giant cow parsley although the giant hogweed leaves are much more solid with a toothed edge, more similar to cow parsnip (normal hogweed). It is typically found near water or on waste ground.
The plant was introduced to Britain by Victorian botanists in the 19th century as an ornamental plant and has escaped from gardens into the wild. It has been spreading across the UK (as one plant produces 50,000 seeds) but is still very rare in Cornwall. A project to eradicate it along the Tamar River system is helping to stop further spread into Cornwall.
If you find giant hogweed in Cornwall (and are sure it's not normal hogweed), take a photo and report it to invasives@cormacltd.co.uk
In 1802, the largest gold nugget at the time found in Cornwall was discovered in the tin streamworks on the River Ladock. It was made into a gold necklace which is now in Truro Museum. The necklace was presented to Sir Christopher Hawkins of Trewithen, who was a bachelor, which may explain why the necklace looks unworn. In 1808, a gold nugget of almost 2 ounces was found in the Carnon Valley which is also in the Truro museum.
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.
The wooden-fenced area on the right contains the Holy Well.
Ladock holy well, also known by its Cornish name Fentonladock, is associated with St Ladoca - an Irish Abbess who is recorded as coming to Cornwall in the 6th Century together with St Breage. The well house was built in the 19th Century but the arches set into the sides are from the 15th Century. In the early 19th Century, it was mentioned that there were the ruins of a mediaeval chapel nearby. It is not known if the arches were from this or were leftovers from the restoration of the church.
Ladock church is thought to be located on the site of a previous church which was built before Norman times. The current building dates originally from the 13th Century which was extended in the 15th Century, and during Victorian times there was a major restoration. The church sits within in a small church town consisting of a Rectory, School and Glebe Farm which is separated slightly from the main village.
If you wish to visit the church, do so via the main entrance from the lane and return here to continue the route.
Ladock was first recorded in 1268 as Sante Ladoce. There was once a manor of Ladock which is recorded as being transferred between various landowning families, but there are no remains of any manor house. The pub dates back to 1620 and was known as the Old Temperance Inn during Victorian times, before becoming the Falmouth Arms.
On the opposite side of the stream from Ladock was a separate settlement, known as Bissick. It was first recorded in 1275 as Batdek. During mediaeval times, Bissick was part of the estate of the Wolvedon family in Golden. By Elizabethan times, Bissick was recorded as having become an independent manor. The manor house, located on the right as you walk up the hill, is carved with the date 1503 and this is thought to be from when the house was first built.
The older an oak tree becomes, the more acorns it produces. A 70-80 year old tree can produce thousands. Acorns are high in carbohydrates and as well as being a staple food for squirrels, they are also a really important food for deer and make up a quarter of their diet in the autumn.
Coppicing is a traditional form of wood production that became redundant when industrial sawmills could easily cut full-grown trees into a range of timber sizes.
The approach with coppicing is, rather than simply planting trees and letting them grow to full size, that the trees are grown only until the trunks are suitable for use as poles and then they are cut to the ground and allowed to regrow.
The cycle produces varied habitats of clearings, bushes and small trees which each support different types of wildlife. Coppicing has therefore been reintroduced in many places as part of a conservation woodland management scheme to promote biodiversity.
Blackthorn and hawthorn trees both grow in similar places but in each season there are different ways to tell them apart.
In spring, blackthorn is one of the first trees to flower. The white blossom appears before the leaves in April. In warm weather, the leaves may quickly catch up and this is when it can get mistaken for hawthorn, which produces leaves before flowers. However, there are a few other ways to distinguish the flowers: blackthorn pollen is orange whereas hawthorn is pink, fading to black. Hawthorn petals overlap each other whereas blackthorn is more "gappy".
In summer, the leaf shape can be used to tell them apart. Blackthorn leaves are a classic leaf shape with slightly serrated edges. Hawthorn leaves have deep notches dividing the leaf into several lobes a bit like oak.
In autumn, pretty much all hawthorn trees have small red berries, even the windswept specimens on the coast. Blackthorn trees may have purple sloes, but not all the trees fruit each year. Some years seem to result in a lot more sloes than others.
Hawthorn trees are often a little bigger than blackthorn, especially in harsh environments such as on the coast. Blackthorn tends to form thickets whereas hawthorn are typically distinct trees. Hawthorn bark is usually shiny whereas blackthorn is dull. The thorns on hawthorn tend to be shorter (less then 2cm) and point slightly forwards on the stem. Blackthorn has longer spikes that stick out at right angles.
Woodpeckers can sometimes be heard hammering on trees in the woodland.
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.
One challenge for regenerating woodlands is preventing invasive species such as rhododendrons from racing into the spaces left behind.
A problem with rhododendrons is that they kill bees. Rhododendron nectar is highly toxic to honeybees, killing them within hours. Some other bee species such as mining bees are also adversely affected. Bumblebees seem to be unaffected though.
Rhododendrons are so successful in Britain that they have become an invasive species, crowding out other flora in the Atlantic oak woodlands. They are able to spread very quickly both through suckering along the ground and by abundant seed production. Many of the root stocks of ornamental specimens have suckered off some new common rhododendrons which have then out-competed the ornamental tree and killed it off!
Conservation organisations now classify the rhododendron explosion as a severe problem and various strategies have been explored to attempt to stop the spread. So far, the most effective method seems to be injecting herbicide into individual plants which is both more precise and effective than blanket cutting or spraying.
Birds are much less affected by the tree species in the woodland than insects or fungi. One reason is that birds can travel some distance for their food but also that they are able to eat a broad range of foods whereas herbivorous insects are much more specialised. Some of the tall conifer trees provide good nesting sites for members of the crow family.
Research has shown that crows have a much higher density of neurons in their forebrains than primates do (the density of neurons in this region is thought to correlate with intelligence).
The brain of a crow accounts for 2.7 percent of the bird's overall weight whereas an adult human's brain represents 1.9 percent of their body weight. This is even more impressive when considered in context: birds need to be as light as possible in order to fly.
Ravens are considered the most intelligent crow species, outperforming chimpanzees in some tests. Consequently an academic is quoted as saying that crows are "smarter than many undergraduates, but probably not as smart as ravens."
Dragonflies were some of the first winged insects to evolve, around 300 million years ago in the "age of amphibians" before the dinosaurs. Fossils of early dragonflies have been found with wingspans of up to two feet across.
Dragonflies are named after the way they hunt, as both the larvae and adults are carnivorous predators. Mosquitoes form a large part of their diet both for adults and particularly for the larvae (nymphs). One dragonfly can eat tens of mosquitoes in a day and an average of over 100 per day has been recorded for the nymphs of some species. It is thought that this is an important factor in keeping the mosquito population under control. Dragonfly nymphs have a massive lower jaw to engulf their prey (a bit like an Angler Fish) and are also able to propel themselves by shooting a jet of water out of their anus.
Their two sets of wings beat out of phase, and the frequency, amplitude and the angles of each set of wings can be controlled. This allows dragonflies to hover in a completely stationary position for over a minute, perform extravagant aerobatic manoeuvres and even fly backwards.
Several species of heather grow in Cornwall and are most easily recognised when they flower from July to September. The one with the most brightly coloured (purple) flowers is known as bell heather due to the bell-shaped flowers. This is the earliest one to start flowering - normally in June. Bell heather is usually interspersed with ling or common heather which has much smaller flowers which are usually paler and pinker and come out at the start of July. A third kind known as cross-leafed heath is less abundant but can be recognised by the pale pink bell-shaped flowers that grow only near the tips of the stems, resembling pink lollipops. A fourth species known as Cornish heath grows only on the Lizard and has more elaborate flowers which are mostly pale with a dark purple crown at the front.
Heathers and heaths are members of the Ericaceae family. The formal definition of a heather is a member of the Calluna genus within this family whereas heaths are members of the Erica genus. Bell heather is actually an Erica and therefore technically not a heather but a heath.
Heather plants have a symbiotic relationship with fungi which grows inside and between some of the plant root cells. Up to 80% of the root structure can be made up of fungi. The fungi are able to extract nutrients from poor, acidic soils that plants struggle with. In return, the plant is able to generate other nutrients (e.g. sugars by photosynthesis) that are useful to the fungi. A similar partnership between plants and fungi occurs in lichens.
Heather can grow in soils which have concentrations of metals normally considered toxic to other plants and they are also tolerant of salty (high sodium) environments on the coast. Their symbiosis with fungi restricts metal uptake through their roots.
Heather plants can live up to 40 years and over time they form woody stems. This provides them with a way of excreting heavy metals that they absorb by locking it up in the layers of dead wood (found by researchers as the areas in the plant with the highest concentrations). Their woody stems have also found many uses over the centuries including fuel, thatch and ropes. One other use has made it into the genus name for heather - kallune is Greek for "to brush".
Lesser celandines are common plants along woodland paths recognisable by their yellow star-shaped flowers. Despite their name, they are not closely related to the Greater Celandine. Lesser celandines are actually a member of the buttercup family and, like buttercups, they contain the poisonous chemical protoanemonin.
From December until the spring, celandine leaves are quite noticeable along the edge of paths. They have a shape similar to a "spade" in a pack of cards and are patterned with lighter green or silvery markings.
Lesser celandines are one of the first flowers to appear in springtime, and start flowering in late February with the peak in late March before the bluebells come out in April. They continue flowering through the bluebell period into early May so they are often seen together.
Due to their early flowering period and prolific quantities in shady places, celandines are an important nectar source for pollinators emerging from hibernation such as a queen bumblebee.
On one of our walks we encountered a schoolteacher telling a group of children holding a celandine that they had found a buttercup. Children can correct their teachers by noting that that "normal" buttercups have wide petals that overlap whereas celandine petals are thin spikes with a large gap between each. Also whilst celandines are out from mid-February, buttercups are normally seen from mid-April and their peak flowering is in May and early June. Their flowering periods do overlap slightly in late April but by May, celandines are past their best.
The name celandine is thought to be derived from the Greek word for swallow, based on the arrival of swallows being a sign of spring. Another common name for celandine is spring messenger, based on the early flowering. This was presumably also the basis of the Victorian use as a symbol of "joys to come".
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.
Celandine roots have numerous knobbly tubers and when these break off, a new plant can regrow from the tuber. Digging animals such as rabbits and squirrels can therefore help to spread celandines. In some parts of the world they have become an invasive problem where their dense mat of leaves chokes out native species which have not evolved to compete with them.
Another name for celandine is pilewort as the tubers of the plant are said to resemble piles. Based on the "doctrine of signatures" (i.e. a plant that looks a bit like something must be a cure for it), the resemblance suggested to mediaeval herbalists that celandines could be used to cure haemorrhoids. This was done by applying an ointment containing crushed celandine leaves to the relevant area. Since celandine contains a poisonous compound, some attempts to ingest celandine in an effort to cure piles have not gone too well.
Blackberries are closely related to raspberries and technically neither is a berry but an aggregate of many individual tiny fruits, each containing a tiny stone like a miniature cherry.
Blackberries are high in vitamin C, K and antioxidants. The seeds, despite being a bit crunchy, contain omega-3 and -6 fatty acids and further enhance blackberries' "superfood" status.
According to folklore, you should not pick blackberries after Michaelmas Day (now known as Old Michaelmas Day, roughly corresponding to 11th October) as this is when the devil claims them. The basis for this is thought to be the potentially toxic moulds which can develop on the blackberries in the cooler, wetter weather.
A project to analyse blackberries picked from busy urban roadsides vs quiet rural lanes found that there was a slightly elevated level of lead in the blackberries from busy roadsides which is thought to have accumulated in the soil when leaded fuel was in common use. Surprisingly, commercial blackberries from supermarkets also showed higher levels of lead than the wild blackberries from rural lanes.
An impressively purple blackberry, pear and ginger chutney can be made with blackberries stashed in the freezer. Simmer 500g blackberries, a few chilli flakes, 4 chopped pears and a finely-chopped 8cm piece of fresh ginger until the liquid reduces. Add 150ml distilled or white wine vinegar, and sugar to taste (amount will depend on tartness of the blackberries). Reduce a bit longer until the desired "gloopy" consistency is achieved and finally season with a little salt to taste to balance the sweetness.
To make blackberry wine, combine 2kg blackberries + 4 litres of boiling water in a plastic container with a lid. Once the water has cooled to lukewarm, mash blackberries and add red wine yeast and pectic enzyme (blackberries contain pectin so this is needed to stop the wine being cloudy). Cover for 4-5 days then strain through muslin.
Transfer the liquid to a demijohn and add 1kg of sugar. Top up with a little more water to make it up to a gallon. After fermentation, the wine should clear by itself; in the unlikely event that it doesn't, use some finings. Rack off from the sediment and bottle; it's worth allowing the wine a year or two to mature as it massively improves with age. As a variation, you can add 500g of elderberries and increase the sugar content for a more port-like wine which will need a couple of years longer for the elderberry tannins to mellow out.
The bramble is a member of the rose family and there are over 320 species of bramble in the UK. This is a big part of why not all blackberries ripen at the same time, and vary in size and flavour.
The word "bramble" comes from bræmaz - a word of Germanic origin meaning "prickly". The study of brambles is involved enough to be considered a discipline of its own and is known as batology (from baton - the Ancient Greek word for blackberry).
Bramble roots are perennial but its shoots last just two years. In the first year, the shoots grow vigorously (up to 8cm in one day!). In the second year, the shoots mature and send out side-shoots with flowers.
The growth rhythm of brambles is so steady that it can be used in forensics to work out how long remains have been at a crime scene.
Bramble flowers produce a lot of nectar so they attract bees and butterflies which spread the pollen between plants. One study found the bramble flowers as the fifth highest nectar producers out of the 175 species studied. Brimstone and Speckled Wood butterflies are particularly fond of bramble flowers.
As well as through pollen being transferred by insects from other plants, if there are not many insects around (e.g. in cold or wet weather), bramble flowers are able to produce seeds without being fertilised (the flower is able to use its own pollen).
Bramble seeds are spread very widely by being attached to a tasty blackberry. Mammals, birds, insects and even some fish will eat blackberries. Bramble seeds can survive up to 100 years in the soil, which helps them to colonise recently-cleared land.
As well as producing seeds both sexually and asexually, brambles can also clone themselves to create daughter plants either via underground stems (rhizomes) or by the over-ground stems rooting where they meet the ground.
Due to their rapid growth, brambles are often one of the first plants to colonise brown-field sites but, unlike heather, brambles are not particularly tolerant of metal-contaminated soil. Heavy metals interfere with plant metabolisms (e.g. the magnesium in chlorophyll could get replaced by another metal instead) and this is noticeable as leaf discolorations such as paler green areas or red edges.
Researchers have worked out that they can do image processing on the colours of bramble leaves from aerial images to measure the level of contamination and even the type of contamination by creating "fingerprints" of leaf colours associated with a particular metal. This seems to work fairly well with completely bare areas (likely to have metal levels so high that brambles can't actually grow) showing up immediately adjacent to those calculated as the most polluted bramble-covered areas.
The Tresillian River has a catchment area that extends all the way up to the A30 at Summercourt and Mitchell. That stretch of the A30 runs along the ridge that is the watershed between the north and south coasts: the land north of the A30 drains into the River Gannel.
Scholars speculate that the Celtic Cross (a crucifix with a circular ring) developed from the sun cross (a cross inside a circle), a common symbol in artefacts of Prehistoric Europe, particularly during the Neolithic to Bronze Age periods. When Christianity came to the Celtic regions, Christians extended the bottom spoke of this familiar symbol, to remind them of the cross on which their new Saviour was crucified.
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