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, and can be picked off by hand.The moment you spot an infestation, spray them with pyrethrum. If the plants are in flower, spray in the evening, so pollinating insects aren't affected.verbascum, buddleia, figwortsmid-spring to midsummerMore advice

, nibbling U-shaped notches out of the edges.Pick off the beetles by hand and destroy.broad beans, peassummer, autumn, winterMore advice on growing peas and beansKeeping capsid bugs away from beans.Watch Monty's video demonstration on sowing pea seeds

.Promptly pick off and destroy affected leaves. If leaf spot is a persistent problem, try growing your primulas under glass.Spraying with myclobutanil may help give some control, although they're not specifically labelled as a solution for primula leaf spot

is quickly ruined, and even if it's immediately picked you can't stop the tomatoes rotting.Ripening tomatoes develop brown sunken spots, which spread to the leaves and stems.Remove blight-infected plants as soon as they are identified, to prevent spread

by the excrement of the larvae.Watch closely for early signs of damage, which usually appear in April or May. Pick off the larvae by hand and destroy them. Spray the adults and larvae with an insecticide containing pyrethrum.viburnumsApril-SeptemberOther pests

, removing any showing signs of deteriorationPick off yellowing leaves from the stems of Brussels sprouts and keep harvesting early varietiesCut down canes of autumn-fruiting raspberries to soil level

to a length of about 20cmLift, divide and replant healthy portions of flag iris rhizomes into freshly prepared soil. Reduce their leaves by half to prevent wind rockWater sweet peas and give a liquid feed. Pick flowers or deadhead regularly

their eggs on the leavesKeep sowing parsley to ensure a continuous supply Cut down unwanted raspberry canes at soil levelSow cabbages to pick as spring greensHoe a little fertiliser into the soil between rows of onions as you weedPeg down strawberry runners

tomatoes with Bordeaux mixture to prevent blightThin heavy fruit crops, picking off the smallest. Aim to leave developing fruits about 10-15cm apart along the stems, perhaps thinning congested spurs down to just a single fruitSow seed of herbs now

Keep picking summer-sown salads to prevent the plants running to seed Plant garlic cloves outside or in modular seed trays ready to plant out later this autumnCover herbs like basil and parsley with cloches, or bring potted ones under cover