ORNAMENTAL STEMS AND BARK
It is during the long
cold winter months when there is a distinct lack of flowers that we can
appreciate other forms of colour in our gardens. There is a wide range of
plants grown for winter attraction because of their coloured stems and
ornamental bark. These are best displayed in a large group or drift to give
impact. Choose a spot that will catch the winter sun and make sure it is well
drained, but not dry. Cultivate the soil, adding plenty of garden compost or
other organic material to improve the soil structure and add humus. My winter
garden is based on heathers, coloured stemmed trees and shrubs, winter
flowering shrubs and climbers such as Jasmine, and a carpet of aconite and
snowdrop bulbs to add and extend the interest well beyond the winter. Daffodils
and tulips can also be used to add colour in spring, then tall oriental scented
lilies in summer.
In autumn the show
begins when the tree and shrubs lose their leaves to reveal the brilliant red stems of Cornus sibirica Westonbirt and
Mid-winter Fire, bright green stems of Kerria japonica and Leycesteria Formosa
and the dazzling orange stemmed willow, Salix britzensis emerging from the
ground cover of the black grass, Ophiopogon planiscapus nigrescens. This grass
is quite black forming dense ground hugging clumps that give a perfect
background to both the bright stems and also a drift of snowdrops. Now white on
black; that’s different.
I did have a black
stemmed Cornus kesselringii but I am afraid it was a curiosity, not quite a
thing of beauty, so it has been relegated to the shade border.
If you wish to try some
grey stems look out a Rubus giraldianus, but treat it carefully as it has
vicious thorns making it perfect for any vandal prone areas. Another excellent
tall shrub is the violet willow, Salix daphnoides which has a beautiful grey
bloom on its stems.
As well as shrubs with
coloured stems the heather garden is often at its best in winter. It can be
enhanced with a magnificent specimen birch tree Betula jaquemontia with pure
white bark in a central position within a drift of gold and crimson heather,
Calluna vulgaris Beoley Gold and Beoley Crimson. All of these plants are
enhanced with the first cold evenings and a bit of frost.
For those in a more
frivolous mood in need of the perfect small specimen tree, I recommend the
Japanese maple Acer palmatum Sangokaku and although it is not cheap, it will
not disappoint. After the dazzling red autumn leaves fall off the bright wine
red stems are brilliant in sunshine.
Maintenance
At the end of March the
shrubs will start to grow, so now is the time to prune them back to a stool just
above ground level to encourage the growth of strong young stems that have the
brightest colour. However I do not prune back the Kerria or Leycesteria. These
get a light pruning after flowering by removing some older shoots back to
decent fresh young growth.
Although the coloured
stems have been pruned and the early spring bulbs are finished, it is still
possible to use this border for a further show of summer flowering scented
lilies. These are quite tall and grow through the shrubs into the light to
flower.
In autumn apply a mulch
of compost after all the leaves have fallen off.
Wee jobs to do this week
As potatoes arrive
place them in a warm light place to allow them to start chitting. A favourite
is an old egg container with the potatoes placed rose end up.
Place a mulch of
rotted compost or manure around fruit bushes to conserve moisture in dry spells
in summer and keep weeds down.
This is the latest
time to complete grape vine pruning. They are normally grown in greenhouses as
upright rods spaced about 12 to 18 inches apart with all growth pruned back to
one bud.
There is still time
to take hardwood cuttings of many deciduous hardwood shrubs and fruit bushes
such as blackcurrants and gooseberries about nine inches long and lined out in
a row spaced about four to six inches apart. They will be fine in open ground
or a cold frame.
END