Ask a Question
Notify Me On Question Update
Email this Question
When is the proper time to apply dormant spray? And If I use dormant spray do I still need to spray later in the season. I have apples, pears, peaches, apricots. Also will dormant spray help with the Japanese beetle?
Rate This FAQ
The spray that is
applied to the fruit trees is actually a "Delayed Dormant Oil." We have
a sheet in the office that shows at what bud stage to apply the delayed
dormant oil. It has pictures of each of the types of fruits trees and
shows the right time to apply it. If you send me your address, I will
be happy to send you a copy.
For general information:
The delayed dormant oil is a wonderful step in Integrated Pest
Management. It will kill both the eggs and adults of aphids, mites,
peach twig borer, pear psylla, scale insects and leafrollers before
they can cause problems. They also can't get resistance to it- they
can't say "this time I'll smother, next time I won't."
Apples: apply the delayed dormant spray at first sign of green on
bud tips to ½" green stage (about 2-3 weeks before bloom)
for coddling moth, apply the delayed dormant spray
starting 10 days after petal fall. Reapply sprays based on protection
interval through the first week of
Pears: for coddling moth, apply the delayed dormant spray starting
10 days after petal fall. Reapply sprays based on protection interval
through the first week of
Peaches, Nectarines, and Plums- apply the delayed dormant oil from
first bud swell to first pink (peach) or green tip (plum)
Cherries: apply delayed dormant spray at bud swell to green tip
Apricots: apply delayed dormant spray from separation of bud scales to
first sign of white in bud tips
There is an excellent booklet that we sell at the office that you can
access for free online. It is called the Home Orchard Pest Management
Guide. It is published by Utah State University. To view this
information, go to:
You can use "horticulture oil" or "volck" oil. The difference between
the spring delayed dormant oil, and the fall dormant spray, is the
amount of oil used. The directtions should be on the label for both
Submit Your Suggestion
Other Questions In This Topic
- I have a grove of plum trees that make a nice addition to the landscape, but too much fruit is a problem. Is there something to treat the tree with so it doesn't produce fruit?
- I had my apple tree pruned this spring and ever since then apple suckers have been coming up all over my yard; especially in my grass. Nothing I've sprayed seems to kill off the suckers, including round-up and sucker stopper. What do you recommend to erradicate apple suckers?
- When can I stop spraying my apple trees for coddling moth for the season?
- Apricots and peaches--what causes the reddish or purple-brown spots on new leaves, buds, shoots and fruit?
- Can GF-120 be used by home gardeners to control Cherry fruit fly? How should it be applied?
- How do I keep the little white worms out of my cherries?
- I have purchased a few acres in summit county at about 9500 feet elevation. The property is in the middle of a meadow, with no natural trees. I would like to plant some evergreen seedlings. Will they grow? I am wondering why the meadow would not already have these types of trees, if they would in fact grow there. Can you recommend the best type of tree for success, or am I better off saving my money? There are evergreens growing all around the meadow a few hundred yards away. Thanks.
- Can you tell me the names of some good Apricot and peach trees to grow around here? Also, my space is limited so I just wanted to plant one of each kind of tree. Will they still be able to pollinate?