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Category: Tree – Root and Branch

Portraits of trees with key features, origins and uses.

Elm – Root and Branch Review

Elm – Root and Branch Review

Elm tree in spring

English Elms have been dying in there millions since the 1970’s. A further outbreak of Dutch Elm disease in the 1990’s make the growing of Elm in the UK a dangerous business.

Key Features of the Elm

  • Latin name – Ulmus minor Ulmus procera other common names English Elm, Field Elm or Atinian Elm
  • Height – 100 feet
  • Type of tree – Deciduous
  • Leaves – green alternate ovate deeply toothed, slightly hairy underneath
  • Flowers – reddish petalless in clusters
  • Fruit – Small central seed surrounded by membraneous wing
  • Bark – Grey brown becoming cracked
  • Family – Ulmaceae

Origins and Distribution of the Elm

  • Not native to the UK despite being called the English Elm but probably brought over by the Romans.
  • Found in North America and Turkey.
  • Planted in parks and gardens in Australia, UK and Europe.

Uses and Attributes of the Elm

  • Durable and waterproof timber was used in waterwheels, coffins and ship building.
  • Romans used the Elm to support grape vines.

Another one bites the dust

Gardeners Tips for the Elm

  • Dutch Elm disease (DED)has ravaged the British Elms and the ‘Constable like landscapes’.
  • There is a conical variety Ulmus ‘Wredei’ that could suit a garden but I am waiting for the DED to die out .

Other types of Elm

  • Ulmus Sapporo ‘Autumn Gold’ is a fast grower and can reach its final height of 15 metres in almost the same number of years . Said to be a disease resistant Elm it is not as stately as the original. It is a hybrid of Japanese Elm and the dwarf Siberian Elm, Ulmus pumilia, and is highly resistant but not immune to DED.
  • Ulmus hollandica hybrid varieties used be common over much of Europe and Britain. They occur naturally wherever English Elms and Wych Elms Ulmus minor and Ulmus glabra respectively have a chance to interbreed but again they are susceptible to ‘DED’

Elm comments from elsewhere

  • In the 1970s a virulent strain of a fungal disease arrived on imported Canadian logs. It was spread by beetles and fanned out killing between 15-30 million trees. It was called Dutch Elm disease as that was where the research in to the cause of the trees death was done

Special Elm Trees

Read about our series on British tree reviews with a bakers dozen fact sheets
Credits
Elm tree in spring by BillLongstaff CC BY-SA 2.0
Another one bites the dust by Unhindered by Talent CC BY-SA 2.0 ‘Another elm in our neighborhood succumbs to Dutch Elm, making 5 or 6 big boulevard elms that have been removed around our corner in the last few years.
These were gorgeous old trees, which provided us with shade in the summer and shelter from January’s bitter north winds. We’re working on planting new trees, but those will be more for the next generation than ours.’
Special Elm Trees by Island 2000 Trust Conservation CC BY-NC 2.0 ‘Our elm project aims to in part replace the many thousands of English Elms lost to the Island through Dutch Elm Disease with the resistant cultivar of Wych Elm Ulmus LUTECE. We buy in and distribute between 500 and 1000 every year and we’re now in our 4th year of the scheme. The original work on LUTECE was done by Butterfly Conservation and Andrew Brookes at Portsmouth University particularly with regard to the conservation of White-letter Hairstreak. We’re on the look-out for more resistant strains too, particularly those based on English Elm.”Here are some of our special resistant LUTECE elms about to be planted out in Totland. West Wight has suffered dreadfully from the renewed outbreaks of DED since 1995 and we’re keen to do what we can to restore an elm component to the landscape. There’s still plenty of elm at a lower level in hedges and as suckers from felled or dead taller trees but there are almost none left as field and hedgerow trees. These are alongside One Horse Field (a Gift to nature Project).’

 

Rowan – Mountain Ash – Root and Branch Review

Rowan – Mountain Ash – Root and Branch Review

mountain ash

The Rowan or Mountain Ash is a member of the same family as the rose and is part of the large Sorbus genus. The trees can be quite singular in appearance when shaped by wind on high moors and mountains.

Key Features of the Mountain Ash

  • Latin name – Sorbus aucuparia other common names Rowan, Whitebeam trees or European Mountain Ash
  • Height – up to 50 feet
  • Type of tree – Deciduous
  • Leaves – pinnate with terminal leaflet andtwo rows of long, green, serrated, oblong leaflets
  • Flowers – large flat-headed clusters in creamy white. scented
  • Fruit – orange to red berries half inch diameter
  • Bark – smooth silver-grey
  • Family – Rosaceae

Origins and Distribution of the Mountain Ash

  • At home on high ground.
  • Common in the UK and Europe.

Mountain panorama with rowan

Uses and Attributes of the Mountain Ash

  • Valued for the Rowans ornamental qualities.
  • Berries are great bird food.
  • Revered by Druids, Norse and in Greek legend to ward off evil spirits
  • Rowan jelly made from the berries is a traditional ‘tart’, accompaniment to game and venison.

Rowan DSCF8583

Gardeners Tips for the Mountain Ash

  • The berries and colourful autumn leaves make this a good and hardy specimen tree.
  • Berries can vary in colour depending on the species from white, yellow, red or orange.
  • Grows well even in very acid soil but may not live as long on thin chalky soil

Sorbus

Other types of Mountain Ash

  • Sorbus is a large genus including hardy trees grown for ornamental qualities that include attractive flowers, ornamental foliage which colour richly in autumn and produce berry like fruit.
  • There are 3 sections of Sorbus; Aucuparia sorbus have pinnate leaves with numerous leaflets. Aria section have simple toothed and lobed leaves while Micromeles group are similar to Aria but have deciduous calyces.
  • Sorbus aucuparia has 5 sub species and a parent to numerous hybrids.
  • Sorbus aucuparia ‘Beissneri’ and Sorbus aucuparia ‘Fastigiata’ have an AGM.

Mountain Ash comments from elsewhere

  • ‘The rowan is also prominent in Norse mythology as the tree from which the first woman was made, (the first man being made from the ash tree). It was said to have saved the life of the god Thor by bending over a fast flowing river in the Underworld in which Thor was being swept away, and helping him back to the shore’. Trees for Life.
  • In the UK the Rowan is known as a tree associated with witchcraft, protecting people and dwellings.

Sorbus berries on mountain ash

Credits
Rowan DSCF8583 by hedgerowmobile CC BY-NC-SA 2.0
Mountain panorama with rowan by moonlightbulb CC BY 2.0
Lijsterbes by ednl CC BY 2.0

Read about our series on British tree reviews with a bakers dozen fact sheets
Lijsterbes

Leyland Cypress – Root and Branch Review

Leyland Cypress – Root and Branch Review

high trees 007

If you want a quick wind break or tall hedge then Leylandii may be the tree for you. If you to annoy the neighbors then this is the tree most likely to cause friction.

Key Features of the Leyland Cypress

  • Latin name – Leylandii x Cupressocyparis other common names; Leylandii is a cross between Nootka Cypress and Monterey Cypress
  • Height – 130 foot
  • Type of tree – Evergreen Conifer
  • Leaves – sprays of green scale-like leaves
  • Flowers – clusters at tips of leaves yellow male & green female
  • Fruit – spherical; brown cones
  • Bark – reddish grey with ridges
  • Family – Cupressaceae

Origins and Distribution of the Leylandii

  • Created in Wales by crossing Nootka Cypress and Monterey Cypress .
  • Widely spread throughout the UK by plants grown from cuttings .

Uses and Attributes of the Leylandii

  • Used in ornamental hedges and garden dividers.
  • Useful as a bird sanctuary for nesting and cover.

leyland cypress cones DSCF7563

Gardeners Tips for the Leylandii

  • Rapidly out grows its welcome in many gardens.
  • The cause of disputes over hedges and light for neighbors.
  • Leyland Cypress needs light but is tolerant of high levels of pollution and salt spray.
  • Trees do not transplant well. If the plant you are thinking of buying is pot bound leave it alone

Other types of Leyland Cypress and Cupressus species

  • Most of the Cupressus genus have a conical or columnar habit
  • There are over 30 forms of Leyland Cyprus arising from open pollination and breeding including Green Spire, Haggerston Grey and Naylor’s Blue.(one of the fast-growing, pyramidal, evergreen tree with scaly blue-green leaves held on flattened branchlet sprays. This vigorous conifer can grow over 100 feet tall, though it usually reaches around 80 feet tall and spreads 15 feet in a garden).
  • Cupressus macrocarpa are golden leaved and Cupressus funebris is a weeping form

Leylandii Sky

Leyland Cypress comments from elsewhere

  • To avoid brown patches, hedge trimming should be carried out during the growing season and hedges should not be cut into older, leafless growth. Leyland cypress can cause skin irritations..
  • Leyland cypress only lives for twenty to twenty-five years. I’ve found that trees left to grow large may have limited root support and are the first to blow down during high winds.

Read about our series on British tree reviews with a bakers dozen fact sheets

Credits

leyland cypress cones DSCF7563 by hedgerowmobile CC BY-NC 2.0
Leylandii Sky by steve_w, CC BY-NC-ND 2.0

Yew Can Outlive You

Yew Can Outlive You

The worlds oldest living thing is a tree. Which tree is the question and where is it growing is a supplementary that causes regular discussion. Yewrica is not the answer unfortunately.

Is it the recently discovered Scandinavian Spruce 9000 years old? Or is it the Australian Wollemi or Huon Pine or the Californian Bristlecone Pine. At the moment the general assumption is that it is the pine recently found and dated in Sweden but may be there is an old Yew lurking somewhere.

Yew

According to Fred Hageneder in his book Yew a History ‘It was under the great Ankerwyke yew at Runnymede in Buckinghamshire that Magna Carta is believed to have been sworn by the barons in 1215. In 1803 Wordsworth celebrated the great yew in Lorton Vale, ‘single, in the midst of its own darkness’, a tree under which both the great Quaker George Fox and John Wesley preached. In many cultures it is the Tree of Life, and its association with churchyards in Britain and Europe has given it a particular claim on the popular imagination as a living link between our landscapes and those of the distant past.
Fred Hageneder’s fascinating book is the first to cover all aspects of the botany as well as the cultural history and remarkable mythology of the genus Taxus or Yew to you and me.’

How can you compete

Unless you own a forest in a suitably protected climatic environment you can’t compete.The next best thing might be to plant a Yew Tree but rather than the green Yew (‘Common Yew’) seen in church yards I recommend the Golden Yew ‘Taxus baccata Semperaurea’ (AGM). These are very slow growing and long lived like their cousins. .

Golden Irish Yew male trees have the same upright form as green Irish Yew. It was first cultivated in 1880. Unless planted in a particularly moist fertile site it is slow to establish itself. In the south golden Irish Yew benefits from some shade from hot sunshine and drying winds.

Irish Yew

Tips for Yew and You

  • Use Yew in hedges – they are evergreen.
  • Only Female trees set berries and some varieties only come in male form
  • The berries are poisonous but are now collected and used in cancer medicines
  • They can be used as wind breaks but only grow slowly 4” a year when young
  • They like slightly damp shade
  • The Dutchy of Cornwall list 14 varieties for sale from the plant shop
  • Yew is a good subject for Topiary
  • Plants are available from nurseries or look for seedlings near a friends tree
  • Be patient with cuttings and even more patient with seeds that need 18months to break dormancy
  • Plants like chalky and limestone areas but I have a healthy specimen in slightly acid soil.

yew Mont Gardon
yew Mont Gardon by Jos van Wunnik CC BY-NC-ND 2.0 “I feel tired…after thousand years…do I have to start again, receiving starlight for a new period?” I can imagine this old yew feels like this, not getting the attention it needs, leaning on a Gallic tombstone on top of a hill, next to the church of Mont Gardon.

See Yew Root and Branch review

Scots Pine – Root and Branch Review

Scots Pine – Root and Branch Review

Scots Pine Forest

The Scots pine is Britain’s only native pine tree and is one of Europe’s most widely spread conifers growing from Spain to Scandinavia. The branches are horizontal in older trees whilst the roots may be deep or spreading.

Key Features of the Scots Pine

  • Latin name – Pinus sylvestris other common names Christmas tree
  • Height – up to 150 feet over a long life of 250+ years
  • Type of tree – Evergreen Conifer
  • Leaves – Long blue-grey needle growing in pairs
  • Flowers – male yellow in clusters at the base of shoots, female crimson at the end of shoots
  • Fruit – slim egg shaped cones, green ripening to brown
  • Bark – A tall tree with narrow trunk covered in orange-red to grey brown plates that are cracked and fissured
  • Family – Pinaceae

Origins and Distribution of the Scots Pine

  • Native to UK and Europe.
  • Grows naturally in Scotland where it is a key species and the national tree of Scotland.

Scots Pine (Pinus sylvestris)
Scots Pine (Pinus sylvestris)

Uses and Attributes of the Scots Pine

  • The timber is rich in resin and thus resistant to decay.
  • Pine is used in building and the long straight trunks were used for mast and ships spars.
  • The plant is rich in vitimin C and the berries and leaves were used to ward off scurvy.
  • Scots Pine timber is often called ‘Deal’.

Gardeners Tips for the Scots Pine

  • A long lived species that can thrive on poor soil.
  • Varieties that are suitable for the garden include ‘Aurea’ a smaller slow grower and ‘Nana’ a dwarf bush Scots Pine.
  • Scots pine will not reach their optimum size on shallow dry chalky or damp acid soils.
  • For the rock garden try Pinus sylvestris Beuvronensis or ‘Watereri’ which may eventually out grow the allotted space.

Other types of Scots Pine

  • There are numerous geographical variants some of which are more bushy than the tall single trunk we are familiar with. There are also several dwarf or pigmy species.

Scots Pine comments from elsewhere

  • Traditionally used as a Christmas tree it has been usurped by other trees except in the USA where it is still popular.
  • Roots of the Scots Pine can develop as deep taproots or as a shallow root system. This means it is very adaptable and can thrive in poor dry soils and at higher elevations.
  • Wildlife Friendly Scots Pine The level branches make good nesting places for birds of prey. The bark fissure host lichen and various wood ants. Birds such as the Siskin, Great Spotted Woodpecker, Great Crested tit and Crossbill can feed well around a Scots Pine. In Scotland Red Squirrels are particularly fond of the cones and seeds of this Pine
  • Scots Pines at the Linn of Dee 4

Read about our series on British tree reviews with a bakers dozen fact sheets

Credits
Scots Pine Forest by nz_willowherb CC BY-NC 2.0 “National Grid ref NN 328280 “An extensive southerly remnant of the ancient Caledonian Pinewood which once covered much of northern Scotland and is one of only two remaining ancient pinewoods in the Stirling District.”
Scots Pine (Pinus sylvestris) by anemoneprojectors (2) CC BY-SA 2.0
Scots Pines at the Linn of Dee 4 by spodzone CC BY-NC-ND 2.0
Forestry Commission

Tree Leaf Design, Shape and Function

Tree Leaf Design, Shape and Function

Leaves Autumn 065

Leaves are the food factories of trees converting light into food via photosynthesis. Carbon dioxide is absorbed by leaves and converted using chlorophyll and water into carbohydrates or tree food. Oxygen is a bi-product of photosynthesis.
Tree trunks and branches of trees are designed to get the canopy of leaves in a position to receive the optimum amount of light.

Common Leaf Shapes

You Can Tell a Tree By it’s Leaf

  • Trees are classified by their leaf in that evergreen trees keep their leaves all year around whilst deciduous trees shed their leaves annually usually in autumn.
  • Various leaves are described by their shape. The names created often have some reference to the shape Ovate leaves bear a resemblance to egg shaped and Lanceloate to a lance or spear.
  • The bottom half of the leaf where it attaches to the tree twig or branch can also have distinguishing features as shown above.
  • Leaf colour varies from yellow to coppery red but the majority of leaves are a form of green.

Leaves

Leaf Texture and Margin

  • This infographic looks at the edge of the leaf or ‘margin’.
  • Serrations are known as toothed whilst smooth edges are known as ‘entire’.
  • Ciliate leaves have hairs, eye lashes or short spines whilst pectinate has spiky edges
  • Texture can be another distinguishing features when trying to identify a tree from its leaves. Rough, leathery, fine, smooth, hairy, glossy, spiky etc each tree leaf has its own characteristic.
  • The underside of the leaf may have a different colouring

barrow Leaves

Other Leaf Issues

  • The above infographic includes more leaf shapes but shows how leaves are arranged on a stem.
  • Bipinnate has sets of pinnate leaves opposite each other.
  • Petiole is the leaves mini stem that attaches a leaf to the node or axil.
  • Trifoliate has three leaves at the end of a leaf stalk or petiole
  • The size and shape of the leaf can be affected by the position and age of the tree and where the leaf is growing.
  • Conifers often have needles which are flat or rounded individual or clustered. Alternatively they may have frondy fern like leaves

Notes
Composted and rotted tree leaves do not have much nutritional value. All the food has been given to the tree.
Composted leaves add humus and improve the texture of your soil.
‘Tree Root and Branch Reviews’ in our category section give some description of individual tree leaves

Credits
The Oxford book of Trees – B E Nicholson & A R Clapham
Hilliers Manual of Trees and Shrubs – H G Hillier
Ultimate Guide to Trees – Jenny Linford
Botany of leaves
Special and Extraordinary Leaves