All Questions \
Gardening Questions
1
2
0
stavy asks:What can i use to kill greenfly?
My roses are always infested, and need to be sprayed with chemicals to kill them. Is there something natural i could use instead?
1
0
biological control
Aphidius is the biological control for greenfly and blackfly. If you have a really devastating outbreak this might be the answer
New Comment:
.
0
0
Several possibilities
Start by squirting the affected areas with a strong jet of water (hose rather than spray bottle). Remove affected stems and leaves. Squash the pests by hand (if you can stand it). Squirt soapy sprays on the plant, especially the smaller larval forms. And try to encourage ladybugs in the garden, since their larvae eat aphids/greenfly. There are also some eco-friendlier sprays on the market.
New Comment:
.
