View Cotoneaster Oystershell Scale Treatment
Gif. That's the armor that those little bugs hide underneath, said hannah. From the university of nebraska:
Scales Integrated Pest Management from image.slidesharecdn.com
This stage only lasts for a week to ten days, so it's. Pine needle scales appear as white specks on the needles of pine and spruce, and occasionally hemlock, fir, and yew. Host plants include ash, dogwood, lilac, maple, and willow.
If the infestation is limited on a host plant, pruning off the infested branches is a good place to start.
Oystershell scale eggs hatch in late may or after treatment, you will likely still see scale insects on your plants, even after the insects are dead. Predominantly lilac, ash, poplars, cottonwood, aspen, cotoneaster and to a lesser extent treatment/care: Oystershell scales more frequently infest ash, beech, boxwood, cotoneaster, dogwood, lilac, maple, poplar, and willow, but they have been reported from more that 130 differenct plants. It develops on the bark of trunks and limbs of a wide range of commonly grown deciduous trees and shrubs, including aspen, ash, cotoneaster, poplars, willow and lilac.
