Many companies offer applications, like dormant oil, to prevent cankerworm infestations. However, this does little in prevention. Due to the unpredictable egg-laying of the female cankerworm, it’s difficult to time any preventative treatments. Therefore, preventative applications may not work. See information on cankerworms.
Tree Care
My trees were sprayed for aphids a few months ago and now I have them again. Why?
Aphids are very persistent and can move from plant to plant. During heavy infestations, more than one application is often necessary. See information on our Aphid Spray.