In the garden this week: Get sowing, plus propagate favourite flowers

Time to sow veg It is a little early to sow direct into the soil (but cover areas with clear or black plastic to warm soil and flush out the first weeds); instead sow spinach, celery, french and runner beans, calabrese, cauliflowers and cabbage in modules in a cold frame or greenhouse. Sow leeks thickly in a pot, to drop into little holes in the ground when a few inches high, and peas into guttering, suspended from the greenhouse roof to fox the mice. Go forth and multiply Suddenly everything wants to grow, so make the most of it and propagate the plants you would like to have in drifts and swaths rather than lone clumps. Asters, astilbe, monarda, campanula, geranium, sedum, coreopsis and achillea can all be lifted, the roots teased, prised or chopped apart and replanted. Give them compost, in the hole and as a mulch, and keep well watered while they settle in.