My shrub is dying
Your shrubs are infested with euonymus scale. This looks like a heavy infestation and therefore difficult to control.
Euonymus can be sprayed with horticultural oil for this infestation from May through June and also from August through September. You'll be aiming to kill the crawlers, the immature stage, which is not protected by the scale cover. Although you cannot spray when temperatures are this hot.
The shrub with the dieback may not recover. To give it a chance prune it back severely to remove as much of the scale as possible. Then monitor it as it regrows and spray the new growth if you see any evidence of the scale again.
Please see the following information from our website,