Timing your dormant oil application for tree pests is crucial for success. Wait until late March or April for best results.

You can either make a dormant oil or a horticultural oil to spray your tree with. A dormant oil consists of 1 tablespoon of ...

v=FEHCwQW7Gdo. Janik gets ahead of aphids in fruit trees “by applying a winter application of dormant oil spray.” The oil ...