Garden waste composts best and quickest in a hot heap. Cover the heap and insulate the sides if practical. Mix hard and soft waste if you have mainly grass clippings tear up some cardboard or newspaper to avoid a soggy mess.
Keep sowing summer bedding indoors. Half hardy annuals can be sown out doors in May. Prick out seedlings as soon as they are large enough to handle.
Start a weed suppression routine. Hoe out any weeds or hand remove any pernicious perennials. Mulch to suppress and avoid weeds.Spot spray weed killer on hard to get at weeds in paving and wall cracks. Treat patios and paths with algicide or moss killer to remove slippy green paths.