Gardening tips for September
Jobs for September in the garden.
Continue to feed and dead-head your hanging basket and container plants, they will often keep going until the first frosts.
September is a good time to plant new perennials as the soil is still warm but there is generally more rainfall.
Keep deadheading annuals and perennials to extend their performance. There is often a surge of grass growth during early September.
Continue mowing regularly and apply an autumn lawn feed. Remember no more than a third of the length of grass should be cut.
Prepare now for sowing new lawn areas, or re-sowing this month or next.
Keep edges neat around beds and borders.
Apply sulphate of iron moss killer at any time if moss was a problem last winter, but it is important to feed the grass so that it can compete with moss.
Raspberry and tayberry canes that have finished fruiting could be pruned out and the new canes tied into position.
Finish off any remaining summer pruning of over-vigorous apples and pears, shortening the long whippy shoots to about finger length.
Plant out new strawberry runners while the ground is in good condition, and prepare for planting other fruits later in autumn.
Grey mould disease tends to attack many kinds of greenhouse plants as the nights get cooler and the air stays damp. Good hygiene by removing all old and dead plant material is the best way to avoid it.
Tidy up the greenhouse now and do not over-water or splash water about.
Continue to train and side-shoot tomatoes and cucumbers. Allow only existing fruit to develop. Remove small green tomatoes and unwanted flowers and trusses.
Take cuttings of evergreen shrubs, such as camellia and rhododendron, and root them in pots of compost with sand added. Some bottom heat in a propagator is an advantage in rooting these plants.