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A. from Boston, Ma writes

I have a serious spider mite infestation on two boxwood shrubs. Can I use Bio Advanced 3-in-1?

It's the end of September, and the night temperatures are currently hovering around 50 deg. Should I start this treatment right away, or should I wait to start until the spring? Thank you.

Answer:

Bio Advanced 3-in-1 Insect Disease & Mite Control Concentrate states on the product label: To prevent insect, mite, or disease infestations or control them when they first appear.  Apply prior to plants blooming or after petal fall is complete.  If you already have an infestation it would be best to treat with something like Bifen IT as a foliar application

Answer last updated on: 10/01/2019

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