Last chance to trim
deciduous hedges to keep them looking tidy over the winter.
Take hardwood cuttings of plants such as
Rosa,
Cotinus,
Salix and
Forsythia.
Check softwood and semi-ripe cuttings taken earlier in the season.
They may need potting on, or selective removal of individual plants that
have succumbed to rots (in order to prevent cross-infection).
Berries, fruits and seeds can be gathered from trees and shrubs, once
ripe, for immediate sowing. Colutea
(bladder senna), Laburnum,
Morus (mulberry) and
Sorbus (rowan) are all suitable
examples.
Check tree ties and stakes before winter gales cause damage.
October is an ideal time for moving and planting trees, shrubs and
climbers, as well as for hedge planting.
Prune bush roses now, if not done already, as reducing their height
will prevent wind rock. These plants are generally shallow-rooted and
can become loose in the soil if buffeted by strong winds.
Shrubs normally pruned hard in the spring such as
Buddleja davidii,
Cornus alba, and
Lavatera, can be cut back by half
now, to prevent wind rock and to neaten their appearance.
Climbing roses should be pruned now if not done last month.
If the weather is dry, keep watering early-flowering shrubs such as
camellias, rhododendrons and azaleas, so that flower buds are initiated
successfully for blooms next spring. Use recycled or stored rainwater
wherever possible.
Bare-rooted deciduous trees and shrubs, as well as root-wrapped
evergreens, become available towards the end of the month, so you could
think ahead and prepare the ground for them now. They are cheaper than
containerised plants, and are the perfect choice whenever large numbers
are needed - perhaps for a new hedge, woodland or rose bed.
You can still order containerised trees and shrubs, and large
semi-mature specimens, for planting over the winter.
Place fallen leaves on the compost heap or into separate pens for
rotting down into leafmould. Shredding leaves first with a shredder or
mower will help them break down quicker.
Pest & disease watch
Garden hygiene helps prevent pests and disease being carried over
from one year to the next. Rake up and destroy (do not compost) any
affected leaves. Diseases such as black spot on roses, leaf blight on
quince, and scab on apples and pears can all be partially controlled in
this way.
Honey fungus toadstools begin to appear in late September and early
October, indicating possible areas of infection. However, there are also
many harmless, saprophytic fungi appearing at this time of year, living
purely on dead material and pose no threat to garden plants. If the
plants look healthy, then there is unlikely to be cause for concern.
Watch out for fungal diseases such as grey mould (Botrytis)
or powdery mildew. Although less common on shrubs than on herbaceous
plants, they may still cause problems when the weather is conducive.
Cultural controls are more effective than sprays at this time of year.
Pruning to increase ventilation, and prompt removal of affected leaves,
flowers or fruits is crucial.
When pruning, take the opportunity to examine branches for signs of
disease. Small cankers, die-back, and rotten, hollow stumps at the
centre of old shrub bases, are best removed early on, before they
spread.