Posted on: 10th September, 2019
EARLY IN THE MONTH.
Sow annual climbers e.g. Asarina, Eccremocarpus, Cobaea, Ipomoea, Tropaeolum and Rhodochiton.
Dead head daffodils and narcissi – feed them but DO NOT cut off the foliage.
Keep an eye out for slugs and take steps to control them.
Plant summer flowering bulbs outdoors e.g. Gladioli and Nerine bowdenii.
For trouble free roses, treat with Scotts Rose Clear 2 combined pest and disease treatment or Uncle Tom’s Rose Tonic for an organic solution to rose diseases.
Prune Forsythias and winter Jasmine after flowering.
Straggly silver foliage plants can be cut back now e.g. Saintolina. (but not down into old wood – that is risky).
Lift and divide pond plants. This is also a good time to introduce new plants too.
Plant Asparagus crowns and Jerusalem artichokes.
Treat potted ornamental plants with Scotts Vine Weevil Killer, as it acts as both a control measure and an insurance policy .One treatment lasts 4 months.
Cover some established strawberry plants with cloches to get an early crop.
Plant new conifer hedges and trim established ones.
Tackle pernicious weeds, like bindweed, with a systemic weed killer containing glyphosate. The strongest is Job Done Tough Weedkiller Sachets.
Hardy annuals can still be sown in situ outdoors.
Plant dormant dahlia tubers 10cm (4in) deep outdoors at the foot of support stakes.
Undertake lawn renovations by repairing damaged edges and removing bumps and hollows.
Take conifer cuttings. Pull off 7.5 – 10 cm (3-4in) side shoots. Trim up the base. Dip in hormone and insert in free draining compost.
Watch out for attacks of gooseberry mildew and gooseberry sawfly, these devastate bushes.
Plant out cabbage, cauliflower, Brussels sprout and celery plants.
Finish planting sprouted maincrop potatoes.
Sow tomato seeds now for outdoor planting in June.
Begin planting up hanging baskets, keep them inside until frost risk is minimal.
Check your greenhouse regularly, as watering, shading and ventilation are important.
Sow Basil indoors, but do not plant outside until there is no risk of frost.
Sow tender veg. indoors for planting out next month e.g. courgettes, French and Runner beans.
Prune early flowered Clematis after blooming e.g. C. alpina and C. macropetala. This is only necessary where space is limited.
This is a good time to re-pot any houseplants that are pot bound.
Store unused seeds left in open packets in an airtight container in the refrigerator.