Knowledgebase
Spider mites in Junipers #941637
Asked August 05, 2026, 3:49 PM EDT
Weld County Colorado
Expert Response
Thanks for contacting us about your junipers. The pictures and descriptions (which are great – thanks) are consistent with this problem. Rather than restating the info in this email, please see the link below which will answer the different questions you have. Go into the store armed with the active ingredient listed in the chart and you can select the miticide treatment that meets your needs.
Note that increased water (including some jetted hosing) can help. Also, often mites have natural predators that keep these mites in check. Many insecticides used in the area can eliminate/kill those natural predators and cause increased populations of mites.
Watch for next year’s new growth, and prune out any dead (crispy) branches at ground level. Depending on how much damage is done, you may have some bare areas but over time they may fill back in with new growth.
https://extension.colostate.edu/resource/spider-mites/Karin