Whiteflies are tiny, 1.5–2.0mm, sap-sucking insects that can damage vegetables grown in the open and in greenhouses.
Tiny white insects fly from plant when disturbed
Large infestations weaken plant by feeding on undersides of foliage.
Light infestations can be sprayed off with garden hose or neem oi
Use garlic spray to deter pests.
Crush 5-6 cloves of garlic and pour over 1 litre of boiling water.
Leave to cool and strain into a spray bottle.
If you add a teaspoon of liquid soap, this can help the spray stick onto the leaves.
Spray this liberally onto your plants and repeat in a couple of days time.
There is no danger of overdosing garlic spray so reapply whenever you like!
Put fine mesh screens over vents and doors to stop insects getting in.
Spray with soapy water, but don't spray too strongly or in bright light as this may damage the leaves.