If you cannot identify the pest, do not spray, call our helpline number provided at the end of this article for help. Life cycle - Adult adelgids lay eggs in March and April. There are two generations per year. Newly hatched young are called crawlers because they move around the plant as they look for a place to feed. This stage does not last long, crawlers mature quickly into nymphs which remain stationary attaching themselves to twigs to feed.
Nymphs develop their wax overcoat slowly as they mature into the final adult stage.
The adults survive the winter to lay the next generation s eggs the following spring and the cycle continues. Control - The secret to effective control is coverage Sprays must be applied so that the entire tree is thoroughly soaked, you should see the spray dripping off the trees. Both the upper and lower sides of the needles and twigs must be covered. Non-chemical controls are harmless to humans, pets, wildlife and beneficial insects like ladybird beetles. These products are not poisons.