Topic: Greenfly, a couple of questions...

[dtw]

Will greenfly (in a greenhouse) get caught with a flypaper?
Do they fly around once they have found a plant to eat, or do they just stay there?

Has anybody tried those ladybird nests?

[manicscousers]

we always plant some coriander and let it go to seed, it brings in the hoverflies and lacewings..they eat greenfly..we got a ladybird house last year so don't know if it worked yet..I worry if the sticky traps will catch the goodies as well as the baddies..some basil by tomatoes is supposed to deter them as well..hope it helps  ;D

[Gillysdad]

I use those yellow sticky cards that you can buy, they're good at catching quite a lot of the white/greenfly pests. But it has to be said, they are cunning little chaps, so I search them out on the plants and give them the finger and thumb treatment.
 :o

[dtw]

Washing up liquid solution in a spray bottle is good for killing them if you've got loads.
Blackfly normally head straight for the new growth on my cherry tree.

[redimp]

Once Greenfly have found a host plant, subsequant generations are flighless until the plant is about to die, then the next generation has wings again so they can fly off to find another plant to kill.

[jennym]

If you repeatedly spray with jets of water as soon as you see them on the plants, you can significantly control them. But you do have to keep at it! I was taught that:
The lifecycle is "incomplete", with many generations in a year. Insects over-winter as eggs on tree bark, or any suitable host, hatching in spring as temperatures rise. Female, wingless nymphs emerge and feed, with their piercing and sucking mouthparts. They undergo a series of developmental changes and in approx two months the winged adult stage is reached. Females then reproduce by parthenogenesis, giving birth to live nymphs. The lifecycle continues as before, and the last generation of the year contains males, who mate with the females, who lay eggs, which over-winter. A combination of numbers of large numbers of eggs and nymphs produced, number of generations, the mobility of the winged adult and the large numbers of host plants means that the population can become widespread.
If they are knocked off the plant by water when they are at the wingless stage, it's difficult for them to move onto another plant to feed, so they starve and die.

[Emagggie]

Had to give my roses a good squirt just before it snowed, they were smothered in greenfly........must check tomorrow.

[Emagggie]

.............and the roses were covered in the little blighters, but not any more ;D

[RSJK]

Use to use those yellow sticky cards in my greenhouse they were good but unfortunately they also trapped insects that were beneficial.