Wednesday, July 18, 2018

05 Sep

Garden Pests – White fly

  Continuing our series of Top Garden pests, today we take a look at White flyThese common sap-feeding pests mainly affect houseplants and greenhouse plants. They are a sub-tropical pest that was introduced into the UK by accident, and now over 1400 species of whitefly have been recorded worldwide, 56 of these have been found in Europe. They thrive in the warm environment of greenhouses.

Whiteflies are a sub-tropical pest

Whiteflies are a sub-tropical pest that thrives in the warm environment of greenhouses

Yellowing and often disfigured leaves are caused by whitefly feeding on the plant cells. Whitefly excretes sticky honeydew deposits as they feed which fall on to the surrounding foliage. This causes a dark sooty mould to develop on the leaves.

Watch out for your greenhouse vegetables like cucumber, melon, tomato, and peppers. Outdoor plants are also affected but not as badly as greenhouse plants.

Whiteflies lay their eggs in a circular patter

Whiteflies lay their eggs in a circular patter in the undersides of leaves

 How to spot

Whitefly are about 1.5mm (about 1/16in) long and they can be easily seen especially if a plant is disturbed – you will see clouds of small white-winged insects flying up.

They lay their eggs in a circular or crescent pattern on the undersides of leaves. Eggs are cone-shaped and are from dark gray to burnt orange. When the eggs hatch in 4-12 days what emerges is a white, legless, flat, oval shaped nymph.

Whiteflies weaken plants and make them vulnerable to further attacks from other pests and diseases.

Read the full article and find out how to treat your garden for White fly.


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