Q: When is it too late to use a dormant oil spray? I have a couple of apple trees. Can I use this dormant oil spray on other trees like my maples and my evergreens? If I mix up too much, I want to use ...

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 ...

If you have a fruit tree, you know that gardeners are not the only ones who enjoy the bounty of the harvest. There are many pests — such as scales, aphids and mites — that feast on the tender plant ...

Maybe gardeners aren’t busy in Minnesota or Iowa during the winter, but for gardeners living in the Mojave Desert, it is probably our busiest time of year. I’m asked about spraying dormant oils on ...

In order for the application to be effective, it must be made on a warm day in late winter. Freezing temperatures must not be in the forecast for 24 hours. After that period, freezing temperatures do ...

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 ...

Decades-old palm trees in Rio de Janeiro flower for the first — and only — time. Air Force pilot safely ejects before F-16 fighter jet crashes in California desert. Federal agents launch immigration ...

Several readers have asked about the timing of dormant oil. This traditional technique involves spraying dormant fruit trees with horticultural oil to smother persistent pests, such as aphids and ...

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 ...