How Do Aphids Affect The Sap Of Plants

Slugs will also eat seeds and tubers, and maincrop potatoes are often badly damaged.
They are mostly active at night and in humid conditions.

Symptoms:
Irregular holes in leaves and other parts of the plant. Slime trails can be seen on soil and hard surfaces.

Aphids:
Are one of the commonest garden pests, they are many different species including greenfly and blackfly. Some species are particular to one plant but others will attack a range of plants. Some are winged and travel significant distances on the wind. They feed on the sap of plants by inserting stylets into the plant tissue and sucking some viruses.

Symptoms:
The aphids can be seen, usually on the new growth of plants which can be weakened and distorted, they secrete a sticky
substance called honeydew which can be infected by sooty mould which is a blackish fungal infection.

Wood pigeon:
Will take seeds of peas and beans, young seedlings, and eat the leaves of brassicas. They are most active in spring and early summer.