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Control overwintering pests and their eggs. Protect fruit trees, flowering and shade trees, roses, vegetables, and other garden plants from scale, mites, and aphids — from eggs to larvae and adults. Also controls some fungal diseases like powdery mildew and rust. Use as directed in winter or early spring for proactive care, and during growing season for control on contact. Natural control. Contains paraffinic (mineral) oil.

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Questions & Answers

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Browse 45 questions Browse 45 questions and 83 answers
Why did you choose this?
Stark Bro's Store
It helps control and prevent fungible , bug infestation
andy on Jan 6, 2020
I have trees I bought last year I want to protect.
Louise M on Apr 10, 2019
It helps control and prevent fungible , bug infestation
andy on Jan 6, 2020
Used it before it works very good!!
James E on May 26, 2019
I have trees I bought last year I want to protect.
Louise M on Apr 10, 2019
This is the most important spray of the season.
SUSAN H on Mar 31, 2019
its the season, had rust last year
David S on Mar 25, 2019
Going to try to give the trees and grapes some added protection this year.
Gretchen S on Mar 20, 2019
wish to try along with NEEM for year round protection.
Tom on Mar 5, 2019
Because it works!!
Stacy S on Sep 3, 2018
I chose this spray to spray my new apricot tree in the appropriate times to protect it from disease and parasites, to keep the tree healthy. If I do my part, I???m sure this will prove to be successful too!
Kathleen S on Jul 5, 2018
Last year, I didn't use any sprays, and my apples were damaged and marked. I hope with this, I will get a much better harvest.
APRIL R on May 1, 2018
Protect plants over the winter!
KATE F on Aug 31, 2017
Great organic spray for a multitude of trees and ornamentals
Keenan F on Apr 6, 2017
For our grape vines.
Dan K on Mar 6, 2017
This says you can spray throughout the year instead of just early spring. Seems like a good idea
JADA U on Feb 18, 2017
Good reviews on multiple home and gardening sites
ROBERT H on Feb 9, 2017
It really helped to control and kill the insects and larvae of an African Citrus Psyllid infection on a Tangerine tree!
Usama T on Jan 20, 2017
covers a good many pest
KENNETH H on Sep 6, 2016
Used this last year for the first time, with great success!
KEVIN R on Apr 3, 2016
Used it before it works very good!!
James E on May 26, 2019
This is the most important spray of the season.
SUSAN H on Mar 31, 2019
will it control brown rot?
larry m on Feb 22, 2016
BEST ANSWER: Thank you for your inquiry. The dormant oil is used for the control of insects and pests, rather than diseases. Please call Customer Support at 800.325.4180 for a recommendation.
How much spray will the container make?
Rick on Feb 23, 2016
BEST ANSWER: The applications vary too much to say for certain. Per the label, some plants/trees require as little as 1oz of concentrate per gallon or as much as 7.5oz of concentrate per gallon. Forgive the math, but this should help give you a range to work with: On average, the pint, which is 16oz of concentrate, could make from 2 to 16 gallons of spray, depending on intended use. The quart, which is 32oz of concentrate, could make from 4 to 32 gallons of spray, depending on intended use. I hope this helps!
Is this product not a dormant spray for apple fruit trees?
Terry L S on Mar 10, 2016
BEST ANSWER: Use it on my blueberry bushes, cherry tree, apricot tree, plum tree and my raspberry canes. I know it says in the instructions what dilution to use for Apple trees as well and I know it can be applied at various times during the year but right now is the best time to use it to fight overwintering pests.
Will this dormant spray oil harm bees?
karen l on Mar 16, 2016
BEST ANSWER: Hi Karen......I used this product and another one that Starks sells during the cold weather beforethe bees were active. Some of the fruit trees are in bloom, others coming, and vines will be too. I don't think I wuill have any adverse reaction to the spray....there's millions of honey bees and wild bees of all kinds polinating now. I would think that it is too late to spray the dormant oil now, with things coming in bloom. You might want to wait until the blooms have been polinate before fruit forms, if you haven't sprayed yet. That might be of some good for existing pests in the bark. By the way, I've always figured that a strong bee hive can overcome some mortality from my sprays and surrounding agriculture sprays, but I likely lose many times more bees to about 80-100 barn swallows that come back each summer and have 2-3 clutches of young each season. Hope this helps you in your spraying.
Is it safe for persimmon fuyu tree?
Luda C on Apr 22, 2018
BEST ANSWER: Yes, Bonide dormant spray is safe to use on all fruit trees. It is applied when the tree is dormant and therefore does not get onto the fruit that will not appear until after the tree has flowered. It is not necessary but as a precaution the fruit can be gently washed before eating.
Can I apply this more than once this spring on my apple trees before bud break?
GABRIELLE L on Apr 11, 2017
BEST ANSWER: I would say yes. Apply before buds show any green, again when blossom bud leaves have begun to sprout and showing a bit of green, again when blossom bud leaves are up to 1/2 inch and all during the growing season.
Which oil spray is best to use in early spring on mature apple trees?
Sandra R on Feb 1, 2018
BEST ANSWER: We like this one because it is a natural product and doesn't require a "sticky" additive to make it adhere to plant leaves. It also has an anti-fungal effect.
is this safe to use on my indoor herbs? i.e. parsley, basil, thyme?
barbara k on Jan 12, 2017
BEST ANSWER: This is an excellent, safe, worry-free horticultural oil to use on indoor or outdoor plants, edible or ornamental. It's most effective on sucking insects such as spider mites, aphids, scale and whiteflies, which is usually what plagues plants grown indoors anyway. Please follow the label directions exactly to get the best result.
Will the oil control slugs?
Jolaine T on Oct 25, 2016
BEST ANSWER: Yes, absolutely Bonide All Seasons Horticultural Dormant Oil Spray is very
important for control. insects who want to overwinter on your fruit trees or roses.
If you don't use it, the number of insects that hatch out in Spring is greatly
increased, as I've experienced over several decades, in different parts of the
U.S. PLEASE USE All Seasons Dormant Oil Spray every year.. I use it twice in
the Fall, October and November on my 36 Stark Fruit trees and 70+ rose bushes.
RS I live near Louisville, KY
Is this effective against citrus miners?
Megan E on Jan 7, 2020
BEST ANSWER: In all honesty I applied it to my fruit tree which I Purchased from Starbucks and unfortunately I don???t know what happened but the tree died out and died after the second beer it was a young daughterEnter an answer to this question.
Can you apply at 30 degrees?
Marky S on Jan 6, 2020
BEST ANSWER: I don't know the answer to this. Actually, I've been having an arborist tend to my trees and he has advised me not to use this product, so I gave it away. Sorry :(
When do app!y this in zone 8b?
Kathleen W on Dec 5, 2019
BEST ANSWER: I do it in the spring after the snow in gone,and before the leaves come out.buds are ok but not leaves.and you want to do it before anything works by cutting off the oxygen the the egg so it needs a little tome to sufficate the bug.
How much do I mix with a gallon of water for best coverage?
Ardi K on May 16, 2019
BEST ANSWER: Peel the label on the back side of the bottle for directions. It varies with the use, but I use 4 or 5 ozs. per gallon. It is pretty forgiving stuff. And it works.
Is this effective against peach borers?
Debby on Nov 13, 2019
BEST ANSWER: Mostly. I should have sprayed earlier and more consistently.
If this is mixed correctly and sprayed on vegetables, how long of a waiting period before they are safe to eat?
Jimmy on Oct 28, 2019
BEST ANSWER: Unknown, I???ve used the dormant oil spray in the fall and winter to treat fruit tree fungus and tree borers.
Is it too late to use the All Season spray on peach, apple, plum, and nectarine trees that have small fruits? I live in Northeastern PA? Thank you.
Sally T on May 14, 2017
BEST ANSWER: No.. using it will help control bugs in a safe and pesticide free manner.
Is dormant spray safe for lady bug and bees?
Anderson-Fisk L on Mar 16, 2016
BEST ANSWER: I use it and I have bee hives and no problem I use the spray in the fall it for use on trees and bushes when leaves are off and for green tip mainly to kill eggs
Can I use on Cleveland select pear trees?
J S on Jan 7, 2020
BEST ANSWER: I have used it on our pear trees. Had no problem with it
I have two questions. First Can I use this product on Olive Trees?
and is it safe for fruit and vegetables plants??
Rosalie C on Nov 13, 2019
BEST ANSWER: We appreciate you reaching out to us. According to the label, this product can be used on olives and is safe to use on on just about any fruit and vegetable plant.

If you have any further questions please don't hesitate to reach back out to us. Have a great day!
Will it help control lantern fly?
Jane M on Nov 13, 2019
BEST ANSWER: Hi Jane - We appreciate you reaching out to us. The label does not list Lanternfly as an insect it will control and unfortunately, there is very limited information available online. If you have any other questions or concerns please don't hesitate to reach back out to us. Have a great day!
Would this work for canna leaf rollers ?
Julie on Nov 8, 2019
BEST ANSWER: Sorry! Have no idea!
Can I chat?
Melissa D on Nov 5, 2019
BEST ANSWER: Hi Melissa, We appreciate you reaching out to us. This is a place to post questions you have regarding the product. A Stark Rep will try to assist you along with other buyers that have hands on experience using the product.

If you have any further questions please don't hesitate to reach back out to us. Have a great day!
I live in zone 5 and I've been told dormant oil will damage a fruit tree when applied in freezing weather. Can this product be used on apple and pear trees when temperatures are below 32 degrees?
Andrew S on Oct 7, 2019
BEST ANSWER: I believe it is to be used above freezing. I try and use it as soon as possible in the spring when the temperature during the day are above 40 degrees.
Can this be used on BlackBerry bushes?
DonnaN on Sep 19, 2019
BEST ANSWER: Yes, it is quite effective on overwintering pests. Please use according to the label directions.
will this control caterpillars? They're demolishing my apple saplings
JDawg on Jun 13, 2019
BEST ANSWER: Yes, it will do a very good job with the caterpillars. Please use according to the label directions.
Will this kill the worms that bore into your peach trees?
Shawn V on Apr 22, 2019
BEST ANSWER: This is a better product to get rid of borers: //
can I use this product on all shrubs and bushes?
Jane H on Mar 21, 2019
BEST ANSWER: You can, but follow the label directions exactly or you could damage tender young leaves. Do not overuse the product; more is not better. :-)
How can the products like copper fungicide, and bonide dormant spray be considered organic?
Jim M on Mar 1, 2019
BEST ANSWER: Because they contain no synthetic/artificial or toxic ingredients. They are made from all-natural sources and comply with all USDA Organic regulations.
What works best to prevent Fire Blight ?
Gary G on Jan 31, 2019
BEST ANSWER: We have an excellent product called Ferti-Lome. The 2 oz. jar makes 25 gallons of spray, which is highly effect on fire blight. Here is a link to that page://
Can you also spray in fall after the leaves have fallen in Maine?
GABRIELLE L on Sep 23, 2018
BEST ANSWER: Hi, Gabrielle. You can; it's best to spray in late winter to take care of overwintering pests so they don't interfere with new growth.

Customer Reviews

4.8 / 5.0
4 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Bonide All Seasons Horticultural Dormant Spray Oil
Easy and safe to use and it works.
Does not kill bees or others pollinator's
May 7, 2016
over 5 years ago
Bonide All Seasons Dormant Spray Oil
Obviously reviewing this product after only 1 application is premature, but the instructions are clear and it is easy to use with a 2 gal. pump sprayer. It was shipped quickly. Looking forward to a great fruit tree season.
May 22, 2018
1 year ago
Bonide Dormant oil spray
Easy to work with, no pesticide added, however there is no way to tell of the products success.
November 2, 2016
over 5 years ago
Bonide All Seasons Horticultural Dormant Spray Oil
I can't say how well it works because I just applied it today,but what I can say is it mixed very easily and and went on with little effort .
November 20, 2016
over 3 years ago