Jobs for the weekend

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•SOW seeds of the following under cloches: carrots, beetroot, broad beans, salad onions, cauliflower, cabbage, Brussels sprouts, spinach, leeks, lettuce, rocket, coriander, mixed salad or stir fry leaves, radish, turnip, peas and Swiss •Cut the spent heads off narcissus and daffodils, but leave the leaves to die back naturally.

•Sow summer bedding plants in a heated propagator or under glass.

•Divide hellebores and polyanthus-type primulas after flowering.

•Top dress spring-flowering alpines with grit or gravel to show off the plants and to help prevent stem rots.

•Improve the drainage of heavy soils by working in lots of organic matter.

•Get herbaceous perennial supports in early, so that the plants grow up through them – I use sturdy twiggy branches. Adding rigid supports later looks unattractive. Criss-crossing strings from hidden posts works well, allowing stems to grow up in the gaps between strings.

•Continue to protect new growth on lilies, delphiniums and hostas, etc, from slugs and snails.

•Apply a high-nitrogen spring/summer lawn fertiliser to encourage strong growth to help the lawn recover after the winter.

•Remove netting placed over the pond to protect it from leaf fall.

•Divide marginal and bog garden plants if overcrowded.

•Contain vigorous perennials by planting in aquatic plant baskets and top with a layer of gravel.

•Cut back old marginal vegetation.

•Protect fruit blossom from frost, but make sure insects can access the flowers or else hand- pollinate them.

•Switch to a summer feed for all citrus trees and increase watering.

•Pollinate strawberry flowers under glass by brushing over them with your hands.

•Plant out cold-stored strawberry runners.

•Plant onions, shallots, garlic sets, Jerusalem artichoke tubers and asparagus crowns if the soil is workable.