Chew Valley Trees - News & Blog

Archive for February, 2010

Tree of the week Salix alba Britzensis Scarlet Willow

Saturday, February 20th, 2010

Salix alba Britzensis, the scarlet willow, is one of the best large, upright willows with coloured bark. Despite its common name it is more orange than scarlet, the strong colour glows throughout winter, seeming to intensify as spring approaches.

Sometimes wrongly listed as Chermesina, which is a similar, though different clone of Salix alba, white willow,  Britzensis is a male variety raised from seed in the 1870s by Spath, a German nursery at Britz near Berlin, hence the name. Its showy catkins are large and yellow.

Like any willow grown for the ornamental quality of its bark, it should be hard-pruned each or every alternate spring to encourage brightly coloured new growth. Old trees can be rejuvenated by pollarding (being cut at 6 to 8ft or so above ground level), which will also stimulate the production of new coloured twigs.

Ultimately, when left to grow on it can make a 70ft tree with a conical shape, the high canopy of coloured twigs sway in the wind and look spectacular when seen lit-up by low angled winter sun against dark rain clouds.

Comments and questions are always welcome.

Simon

  • Share/Bookmark

Shrub of the week Hamamelis mollis Chinese Witch Hazel

Wednesday, February 10th, 2010

Regarded by many as the best of the Witch hazels and definitely the most popular Hamamelis mollis is a shrub that can brighten up any garden on a windy February day.

Native to  China it is a slow growing but ultimately large shrub, with soft hairy round leaves that have a lovely yellow autumn colour. The main feature of this plant are the flowers that appear in February.  When clusters of sweet smelling, bright yellow flowers with ribbon-shaped petals cover the other wise bare stems.  Robust and hardy this plant will grow in full sun or partial shade.

As always comments and questions are always welcome.

Simon

  • Share/Bookmark

What is the first sign of spring?

Wednesday, February 3rd, 2010

For many people the first sign that spring is on the way is the sight of the first blossom on trees.  Many wonder which tree it is that blossoms so early. It can often appear in hedgerows or scrubby corners and be confused with the native hedgerow shrub Blackthorn, Prunus spinosa.

It is in fact Prunus cerasifera, also known as the Cherry plum or Myrobalan  which is a species of plum native to central and Eastern Europe, southwest and central Asia, though the true wild species may be Prunus divaricata.

It is a large shrub or small tree reaching 6-15 m tall, with deciduous leaves 4-6 cm long. It is one of the first European trees to flower in spring, often starting in mid February; the flowers are white, 1.5-2 cm across, with five petals. The fruit is a drupe 2-3 cm in diameter and yellow or red colour; it is edible, and reaches maturity from early-July to mid-September.

Purple leaved plumThe reason it is so common may be because it is a standard root stock for most fruiting plums.  When the top of a plum tree dies, sprouts arise from the root and take the place of the original tree.

The commonest cultivars have been selected for purple foliage and pink flowers and known generally as Purple leaved Plum, such as Prunus cerasifera ’Pissardii Nigra’, a handsome form with purple leaves and dark wine-red fruit. Introduced into France by Pissard, gardener to the Shah of Persia. It is a cultural form of Prunus cerasifera and is one of the best of all small purple-leaved trees.

As always comments and questions are always welcome.

Simon

  • Share/Bookmark