Aphids

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Relevant Data About Aphids

A first generation of aphids appears normally in the late spring (approx. at the beginning of June in Europe). After a successful treatment, a second generation might appear at the midth of the summer (approx. at the end of July / beginning of August in Europe).


Harm Caused by Aphids

Symptoms vary according to the species of aphids. Most of the time, brown or purple stains appear on the leaves and fruits. Aphids secrete a sweet and sticky substance, "honeydew", which is a growing ground for fungi and attract ants. An aphid infestation make plants more sensitive to other sicknesses.


Learn to recognise the different aphids for a better control:

Species Image Symptoms associated with this species
Bean aphid

(Aphis fabae)

(Not yet available) Produce large quantities of honeydew making dark brown and sticky stains on leaves, attract ants in masses, Sooty mold grows rapidly.
Rosy apple aphid

(Dysaphis plantaginea)

Rosy apple aphid.JPG The leaves are strongly rolled up, the leaves and fruits show purple stains, Sooty mold grows rapidly.
Green peach aphid

(Myzus persicae)

Aphid Imago.JPG Water stress, productivity loss, blemished leaves. Green peach aphid can transmit viruses.

Biological Control

Proper fertilizing

Fertilize the earth of your plants with a potash-rich fertilizer in the early spring: potash strengthens the cell walls of the plants and makes them thereby more resistant to parasites.

Self-Made Recipes

  • Nettle (Urtica) Manure, alternatively for balconies: nettle tea. For garden, use rather manure than tea, since the preparation of tea would cost too much energy for the needs of a garden.

Mixed Cultures

Predators

Why they yet should not be eradicated

Aphids are a link within an ecological chain. They are food to popular animals like ladybird you would not like seeing disappearing from the planet.

Bees use the honeydew secreted by aphids as supplement or replacement to nectar to make honey. Honey made of mainly honeydew is considered as a delicacy. Fir honey is for example a honey that is essentially made out of honeydew.



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