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Category: About Trees

Articles involving trees, shrubs, bushes, woods and hedges plus related subjects

Avoid Tree Damage to Buildings

Avoid Tree Damage to Buildings

Far away tree

Trees are great natural features in our British landscape. It is no surprise that gardeners want to grow them in their gardens.
In addition to the horticultural problems trees can cause damage that other plants do not.  Broken branches and flying debris can break glass or knock down fences, roots can damage drains, trees take up water from the soil leaving it prone to subsidence and, rarely trees cause damage to foundations .

How to Avoid Tree Damage.

  • Only plant trees where they are unlikely to cause direct damage or subsidence.
  • Do not allow trees to overhang buildings.
  • Plant trees 6 feet  or 2 m   away from boundary walls.
  • Subsidence depends on many factors chiefly soil type, foundations, weather, and vegetation. Trees can increase the risk of subsidence because they take  water up from the soil. Clay soils are often worst.
  • Don’t plant trees anywhere near overhead electricity lines or telephone wires.
  • Ensure trees do not grow over greenhouses, conservatories or roofs.
  • Prune dead wood to avoid or reduce branches breaking off.
  • Keep the height of your trees below the distance to your buildings.
  • Root damage to buildings is rare and subsidence is the more likely cause
  • Leaking drains will get clogged up with tree roots (roots cannot get into sound unbroken drains). Maintain your drains.

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Quick Tips for Roses In June

Quick Tips for Roses In June

Peace Rose

This year my roses are a good bit later to come into full bloom. The cold snap in May undoubtedly caused problems.

A white rugarosa type had all the buds ‘browned off’ by a late frost and guess what colour that left me  -  ‘browned off too’!

Tips for June

  • Deadhead repeat flowering roses to get a second flush. Flowering may stop when seed is set.
  • Cut above the first leaf node and angled away from the leaf.
  • Do not deadhead roses you grow for the hips such as Rugarosa types.
  • If you have any blackspot wash your secateurs between each plant to avoid spreading the disease.
  • Check for suckers, track them back to the roots and pull them off neatly. Cutting them may leave a bit of sucker and you will get two suckers from that one spot.
  • If you are troubled by Aphids, and who isn’t, then use your favourite treatment. I have just organically squashed quite a large crop on the buds of my climber roses.

Getting Bigger Blossoms

  • If exceptional blooms are required nip out the side buds and leave one bud per stem to develop fully. All the energy gets channeled this way.
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Lilac Blossom Time

Lilac Blossom Time

White Lilac

I think lilac trees are boring for 11 months of the year but for a powerful scent they are hard to beat in late May.

The White Lilac is every bit as scented as the ‘lilac’ Lilac.

For tips growing Lilac see this post

For cut flowers

  • Pick stems early in the morning when full of sap.
  • Put immediately into warm water,
  • Split the stem for 1″ with a sharp knife do not crush.
  • In this way they should last more than 4 days but otherwise Lilac will disappoint.

Lilac

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Bird Cherry – Prunus Padus

Bird Cherry – Prunus Padus

Prunus padus blossom

Not the the traditonal blousy Japanese cherry but the purple-leaved bird cherry is a more unusual choice for the large garden.

Bird Cherry Description

  • Smaller than the wild cherry it will still grow to circa 20-30 feet with a similar spread.
  • Dark purple shoots appear in spring followed by coppery-purple foliage that gradually fades to green.
  • The dark foliage is the perfect foil for the delicate pale-pink flowers, which are held on elongated clusters.
  • The flowers have a delicate almond scent
  • These are followed later in the year by astringent black fruits which birds adore.
  • The bird cherry will grow on most neutral to alkaline soils and is particularly good for chalky soils.
  • Often seen in mixed hedges that support wild life.

Bird Cherry Varieties

  • Albertii is a vigorous free growing fome of Prunus Padus
  • Clorata has an AGM for young coppery leaves and pale pink flowers.
  • Waterii grandiflora long racemes of flowers and also has an AGM
  • Prunus padus commutata The Mayday Tree is of medium height (30′), low-branched and has a compact, rounded canopy that may reach 20′
Growing Acer as Small Trees

Growing Acer as Small Trees

leaves

Acer are renown for the colour of their leaves in Autumn. Careful selection of varieties will produce great spring colour in addition to your Autumn blaze of glory.

leaves

Select the varieties that are classified as shrubs. ‘Japanese Maple’ Acer japonicum and palmatum will give you the desired results.

Other Acers like Field maple, Sycamore, Red or Silver Maple are all medium to large trees 50′ plus.

Paper bark maple and Snake bark maple have interesting bark and grow to be small trees 15-25 feet tall.

leaves

Acer japonicum Vitifolium is one of my favourites not shown here. It has salmon coloured fan shaped  leaves that turn red in Autumn.

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Apple Blossom in Pictures and Notes

Apple Blossom in Pictures and Notes

Apple blossom

2010 seems set to be a great year for Apple Blossom. All around there seems to be vast quantities of blossom on each tree – let us hope there are enough Bees to go around when it comes to pollination.

I was surprised when I looked more closely at the size and colour on the blossom of different trees and have reproduced some varieties here. As you may remember there was a lot of frost damage on a row of cordons but, touch wood, my main trees remain unaffected.

The late arrival of warm weather is playing into the hands of pollination as most varieties seem to have opened at the same time. This will bring the insects out and help cross pollination to produce a good crop of Apples.

Apple blossom

Glowering skies loom over this tree but showers of rain are an occupational hazard for Apple blossom. As long as the rain drains from the tree and is not trapped in pockets to cause wood rot there is no problem.

I have to admit to a spray regime after blossom fall to protect my fruit to deter insects

Apple blossom

This eating apple has dark red skin and I will have to look in my old note book to remind me of the variety. Still I am not surprised to see that it has pinker blossom than the James Grieve.

Each blossom was larger than the old half-crown and made a wonderful sight.

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Uses of Willow in the Garden & Living Sculptures

Uses of Willow in the Garden & Living Sculptures

Willow boat

Interest in Willow has revived over the last few years and there are many garden uses.

Decorative Uses

  • Royal Horticultural Gardens at Harlow Carr have several living willow sculptures. The fine boat shown above is an example that entertains the kids who visit. A bit big for my garden.
  • Narrow Willow hedges can be used to separate ‘garden rooms’.
  • Tunnel type structure made of sticks of living willow can create a unique feature.
  • Children will enjoy making and playing in wigwams, domes and tunnels.
  • More advanced projects, suitable for adults, include fences, chairs and arbours.

Book Cover

DVD Making Living Willow Sculptures

Practical Uses of Willow

  • Willow weaving can make Trugs or baskets for use in the garden.
  • A natural hedge from woven willow suits some sites, if used as a wind break it is called a ‘fedge’.
  • Willow can now be grown for green bio-mass fuel.
  • Traditionally Willow is used for cricket bats, charcoal, furniture and medicine.
  • The bark contains growth hormones and can be used to make a simple extract that will promote rooting and cutting growth.

Varieties and Uses of Willow

  • Salix Viminalis Gigantea Very fast growing – long and straight.
  • Good for large structures, windbreaks, hurdle uprights etc.
  • Salix Triandra Viminalis Very fast growing – long and straight.
  • Good for Large structures, Windbreaks, hurdles
  • Salix Dasyclados Very vigorous slightly shorter but thicker than Viminalis.
  • Suitable for structures, windbreaks, fuel production.
  • Salix Tora or Jorr Very vigorous growth – Swedish, Suitable for structures, windbreaks and fuel production.
  • Salix alba Vitelina Ornamental golden willow, Suitable for hedging, windbreaks and basketry.
  • Salix Triandra Black Maul Warm chestnut brown colour Suitable for hurdles, basketry and weaving in to structures for colour.
  • Salix Triandra Q83 Super Willow- (hybrid of viminalis and triandra) has the vigorous growth of viminalis with the weaving qualities of triandra. Attractive medium brown stems, catkins.Suitable for hurdles, basketry and weaving into living structures.
  • Salix Purpurea Leentges, Nicholsonii Purpurescens or Helix Suitable for basketry and hedging.
  • Salix Purpurea Abbeys or Dicky Meadows, Suitable for basketry.

List of varieties from Willow Withies

Wisteria Hysteria due to Scale Bugs

Wisteria Hysteria due to Scale Bugs

Wisteria

Spring flowering Wisteria are starting to clothe the walls with festoons of flowers.
It may be an excuse for newspapers to show pictures of Wisteria in full bloom but they are running a story about Asian insects wiping out our Wisterias.

The Problem

  • RHS entomologists are reputed to be very concerned about Wisteria scale insects  that are 10mm in diameter.
  • These insects deposit 1000’s of eggs to later feed on the plant’s sap.
  • Branches and whole plants will succumb over time.
  • Infections are worse around London and the south.
  • Stems can become heavily encrusted with scales.

The Future

  • Experts fear the bug may spread to other trees and fruit bushes.
  • Treat with a systemic insecticide – it is no time to worry about organic insecticides.
  • It also gives me a chance to show a white flowering Wisteria

White Wisteria

Tips for Moving Shrubs such as Forsythia

Tips for Moving Shrubs such as Forsythia

Forsythia

How do you move shrubs that have out grow their current location? When should you move flowering shrubs?

Tips for Moving Shrubs
Move plants only when unavoidable by digging around the plant to create a big root ball of soil.
Heavy rootballs can be dragged into place on a piece of sacking or an opened out compost bag.
Dig a £10 hole for a £5 plant, loosen the bottom of the hole, mix in some bone meal, back fill, tamp down the soil and water in.
Replant at the same depth – look for the soil level on the trunk or lower branches.
If the shrub is really big and bulky, prune it back hard before moving. You may loose some blossom the following season but it should regrow.

When to Move Plants

Move flowering shrubs in early winter when the shrub is dormant.
Incase of fatality take and root cuttings before moving.
If moving house ask permission of the new owner or stipulate your intentions when selling your property.
If you must move the plant when it is growing, water well for several days before, prune off unnecessary lush growth and do not allow the roots to dry whilst moving.

After Care
Keep your shrub well watered and mulched until it settles down.
Do not stress the plant by striving for excessive blooms in year one
Revitalise the soil around the old hole for your next plant. Humus and nutrients will be needed.

Spring Shrubs Forsythia and Flowering Currant

Spring Shrubs Forsythia and Flowering Currant

Forsythia

Forsythia is now in rampant bloom around our village. The sunny yellow flowers compete with the Daffodils for a place in the yellow spectrum of colour.

Blossom arrives before any leaves on the twiggy growth from earlier years. This cloaks the shrub in a mass of yellow blossom that really takes some beating. Only the very old wood has not got blossom this year and I will be tempted to encourage new twiggy stems by selective pruning when the flowering has finished. This will only be a light trim like they say at the barbers not a No 1.

Forsythia grows 1-2 feet per year from cuttings taken in late spring when the wood is green. Push 6 inch stems into a gritty soil preferably with some peat added as they like acidic soil. The shrub grows to 7-10 feet tall and almost as wide if left untended but it is then open and erring towards straggly, so I recommend the post flowering trim.

Flowering Currant

Flowering Currants also called Ribes sanguineum are also early spring blossoming shrubs. The sprays of flowers are like racemes of red or dark pink that are on show as the scented grey green leaves start to open. There is also a light pink variety that is a strong grower reaching 10 feet tall if left to its own devices.It is best kept at a 4-5 foot height.

Some better know varieties include ‘King Edward VII’, with red flowers, ‘Pulborough Scarlet’, also with red flowers and ‘White Icicle’, with white flowers.

Pink Ribes

Tips for Spring Shrubs

  • Prune after flowering. This encourages new flowering wood to grow for next year.
  • Take cuttings to propagate new shrubs in spring or early summer.
  • Mulch shrubs after summer rain or a good watering to see them through a dry summer.
  • Both Flowering Currants and Forsythia are east shrubs to grow.

Forsythia