How to Kill Aphids in Cherry Trees Before Spring

Aphids are parasitic insects that pierce the leaves and stems of a plant to suck the fluids out of them. Aphids feed on almost all plants but various types of aphids specialize in a specific plant type. They are a common problem in cherry trees because they are attracted to the sap, and they badly damage the leaves when left unchecked. Black cherry aphids are called "Myzus ceraki" and are black with a metallic black covering. Killing aphids in cherry trees before spring requires diligence and care.

Garden hose
Insecticide soap
Lady beetles
Parasitic wasps

Instructions

- 1
  Spray the tree with water from a garden hose before spring is set to begin. The water pressure dislodges any existing aphids and greatly reduces their numbers as aphids are brittle and many will be killed off.
- 2
  Spray an insecticide soap onto the trees with a particular focus on the underside of the tree leaves since aphids tend to build up there. Follow all instructions on the package of the insecticide for best results in killing the aphids while also avoiding tree damage.
- 3
  Release lady beetles or parasitic wasps into the cherry tree once the insecticide has worn off. These organisms feed on aphids and effectively kill off any remaining aphid populations. They also won't damage the cherry tree.

How to Care for a Blue Bear Claw Fern

Germinated Seeds Are Rotting

Plant Basics