Slugs and Snails Encourage predators and improve the soil by adding compost, you can also use slug traps or slug pellets. Try sprinkling coarse grit in a circle around the plants you want to protect. More helpful information here

Pigeons If Pigeons are a major problem you will have to net your produce, but please be aware it's easy for birds and hedgehogs to get trapped in nets so please check them regularly

New Zealand Flat Worm Improve the soil and kill any Flatworms you can find as they eat your earthworms. More helpful information here

Aphids (Greenfly and Blackfly) Aphids are one of the commonest and most troublesome of all our allotment pests, attacking a large number of plants.  They suck the sap of the plant and prefer the tasty new shoots.  It is unlikely the plant will die but it can be seriously weakened, resulting in a lower yield. More information on aphids here

Carrot Fly (also known as carrot root fly) The carrot fly and its larvae affect mostly carrots, parsnips, parsley and celery.  It lays its eggs in the soil next to the plant and is attracted by sight as well as scent.  Try to thin seedlings or pick produce in the evening when the carrot fly is not about. More information on carrot fly here

Pupa and larvae

Flea beetle Loves plants such as cabbage, cauliflower, brussels, kale, turnip, swede, radish and salad rocket, it also like wallflowers and alyssum. Symptoms to look for include small round holes in the upper leaf surface damaged areas dry up and turn brown.  More information on Flea beetle here

Cabbage Whitefly White insects that fly up in clouds when disturbed, they can make a mess of your brassicas. Try the organic way of treating them and spray with a garlic and water solution. More information on whitefly here.