Aphid (Aphidoidea). Small, herbivorous insects up to a maximum of 5 mm. Damage mainly the young leaves.
The damage caused by aphids consists in weakening the plant: the juices necessary for growth are sucked out by the aphids. This causes deformations of the blade (humps, curls).
The plant sap contains more sugars than the aphids can absorb; the excess is secreted in the form of honeydew. Ants, bees and wasps love it. On honey
Where to find
Aphids can occur on virtually all green parts of plants, shrubs and trees. These plants are especially susceptible to it:
- Broad bean – black bean aphid (Aphis fabae)
- Leafy vegetables
Control with natural pyrethrum, soap spirit, soap suds, rhubarb solution or nettle solution.
Rapeseed oil is also an effective pesticide; however, it is not selective, so it also kills beneficial insects (bee, bumblebee, ladybird).
Control aphids with the larvae of ladybird (Adalia).
Scale insects are not easily removed.