You should have applied the most important insect spray of the year — dormant oil sprays — during the winter. Why then? Because that’s when insects susceptible to these sprays are most vulnerable. Why ...

The chill in the air reminds gardeners that it’s time to start winter chores. Spraying of dormant oils on deciduous fruit and nut trees, roses and other ornamentals can diminish the incidence of ...

We’ve passed the winter solstice and that means we’re on the way to spring and the gardening season. If you’ve got questions, turn to Ask an Expert, an online question-and-answer tool from Oregon ...

CORVALLIS – Just when you’re ready for a long winter’s nap, it’s time to tend your fruit trees. If you don’t, chances are they’ll struggle in the coming season. Giving them attention now helps ward ...

In the coming weeks areas across the Treasure Valley could reach temperatures desirable for applying a delayed-dormant oil spray. The use of horticultural oil as a delayed-dormant spray can target ...

Q. I am confused about when and how to apply dormant oil. What pests does it control? A. Dormant oil is used to “smother” the overwintering stages of insects such as spider mites, scales, mealybugs, ...

Dormant oil sprays are applied to plants during mid to late winter to control overwintering some insects, like scales. Some plants infested by scale insects include lilac, dogwood, Euonymus, apple, ...

WITH THE SEVEN reasons to prune last week, you should be ready to start pruning. With this in mind, let us take some time to explain dormant oil spray and then explain the two types of cuts in pruning ...

Q: You seem to be a “fan” of recommending spraying dormant oil as a pesticide. Is this product good to spray on most trees and shrubs that typically grow around here? — M.C., Albuquerque A: I don’t ...

After a few years of watching and waiting for a peach tree I planted to bear fruit, it finally did this year. Unfortunately, it was unable to produce during those first few years because of peach leaf ...

It's time to start working on managing pests in your fruit and landscape trees this year. Springtime is starting, even if it is delayed a bit from the normal timing. Given the huge differences in ...

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