Granulate Ambrosia Beetles active!

Nurseries throughout the state have reported Ambrosia beetle captures in traps and attacks on trees. Granulate ambrosia beetles emerge in early spring and attack many deciduous trees.  They have been reported to damage over 100 species of trees.  However, species most commonly reported to be damaged in North Carolina nurseries are styrax, dogwood, redbud, maple, ornamental cherry, Japanese maple, and crepe myrtle and magnolia. The best way to prevent damage is to apply a pyrethroid such as permethrin or bifenthrin to tree trunks. Beetles generally attack below the first scaffold branches so spraying entire trees is unnecessary and can lead to mite outbreaks. An insect not is available here.


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