Skip from Colorado writes
I have about 600 cucumber plants in a large greenhouse. We get black aphids and green aphids. Is there a good systemic control for our problem
Due to your cucumbers being in a greenhouse, there are limited products that can be used systemtically. Bonide Insecticidal Soap is labeled for cucumbers in a greenhouse. We would recommend speaking to the local extension office for a recommendation.
Answer last updated on: 11/18/2014