aphids attack - Knowledgebase Question

Deltona, Fl
Avatar for rap52b
Question by rap52b
December 3, 2009
We have lined our back 1/2 acre of yard with Vibernum to act as a fence on either side. They have been in place about a a year and a half I am noticing on the most of the new growth black aphids are present. With such a large plant (some four some seven feet now) and so many of them, how can I combat them or dont I need to? Will they completely take over and kill?

Answer from NGA
December 3, 2009
Aphids can cause curling leaves if allowed to feed uncontrolled. Aphids can sometimes be managed by simply washing them off of plants with a forceful jet of water. Hosing plants can lethally injure aphids and very few surviving aphids that are knocked to the ground can successfully find their way back onto their host plant. I'd try hosing them off the plants to see if that is effective. If they return you can use Insecticidal Soap sprays to control them, or pyrethrum based insecticides. If it continues to be a problem you might try using a systemic such as Merit (imidacloprid). I hope simply hosing the pests off will do the trick but if not, you have lots of other choices.

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