Remember, weather can be on your side when dealing with aphids. Heat and high humidity can really knock them back as they are fairly fragile and die off in droves when temperatures are over 90°F.

Can aphids survive in cold temperatures?

A generation of aphids survives the winter as eggs, which allows them to withstand extreme environmental conditions of temperature and moisture.

What temps can aphids survive in?

Accordingly tests to examine the intensity of cold that aphids could survive were made at -20' F, O0 F, 10' F, and at 26' F. The aphid material was obtained from parthenogenetic cultures maintained on suitable host plants in the greenhouse at 70" F, 65% R. H., and at an 18-hour photo- period.