Wednesday 11 May 2011

RHS Diary: Top tips for May

May is relentlessly busy in the garden. Be prepared to protect tender plants and vegetables such as courgettes and beans from low night-time temperatures or even late frosts.
Shade your greenhouse by using external roller blinds, or liquid products sprayed or painted on. Plastic mesh and woven or knitted fabrics are also suitable and available off the roll at garden centres.
If daffodil flowering has declined, divide bulbs while you can still see the remains of foliage. Separate out the larger ones for replanting. Pot up smaller ones and place in the cold frame, or plant in a spare patch of ground to develop.
Winter moth damage appears in May with bound and eaten leaves. If you use garden insecticides, go for those that are systemic and longer lasting (Bug Clear or Ultimate Bug Killer), and use them at dusk, when beneficial insects are not around.
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