Thin out annuals and vegetables sown earlier.

Feed established lawns.

As warmer weather prevails, keep an eye out for pests and diseases.Beware of night frosts. Keep a sheet of horticultural fleece or even some newspaper to cover vulnerable plants at night if temperatures look set to drop substantially.Use a hoe to keep down weeds as they germinate, giving them less opportunity to set seeds.

Continue to water recently planted trees and shrubs on a weekly basis.

Remove blanket weed and duckweed regularly from ponds so that they don't take over.

Feed fish once a day.

Prune pyracanthas which are trained against a wall by cutting out shoots growing directly into or away from it. Shorten the others to around 8cm (3in).Prune early-flowering shrubs such as Kerria japonica and Spiraea Arguta'.Tie in the shoots of vigorous climbers such as clematis, roses and vines on a regular basis.