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Bonide® Fung-onil™ Multi-Purpose Fungicide

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  • 2 or more: $17.99 each
Item #H1505, 16 Ounce Concentrate
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Controls virtually every fungal disease. This fungicide will help manage diseases like scab, brown rot, black spot, mildew, and rust. Use on many fruit trees, vegetables, flowers, shrubs and more. Follow product label and apply as directed.

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1 Year Warranty

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Questions & Answers

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Browse 20 questions Browse 20 questions and 24 answers
Why did you choose this?
Stark Bro's Store
I have had apple trees before. I never knew how to care for them. They always had problems so I read what this product did. It seems to help with some of the problems I have had.
Ray M on Feb 15, 2017
Used it for my fruit trees. Excellent fungicide
Bobby O on Nov 5, 2016
I have had apple trees before. I never knew how to care for them. They always had problems so I read what this product did. It seems to help with some of the problems I have had.
Ray M on Feb 15, 2017
For Tomato Blight
MARCUS W on Feb 15, 2017
Used it for my fruit trees. Excellent fungicide
Bobby O on Nov 5, 2016
For Tomato Blight
MARCUS W on Feb 15, 2017
How is this applied to the tree? What is the dilution ration? Will it control brown fruit rot on a nectarine tree in Alabama?
Jamie S on Mar 25, 2016
BEST ANSWER: It is a liquid concentrate that you will mix with water and put in a tank-type sprayer to make an application (either in the fall or the spring depending on your needs). It does control fungal issues like brown rot in nectarine trees, and the instructions recommend 3 ?? teaspoons per application. This and other specific-use information is included on the product label for your convenience.
Will this help if the trees leaves are curled and have black spots?
Carmella W on Aug 6, 2016
BEST ANSWER: Thank you for your question. In order to help you, we need to know what kind of tree is having the problem you describe. Could you please supply that information?
Does this product work on apple rust?
artistfaith on Jun 1, 2016
BEST ANSWER: I have two apple trees in my backyard. During 2014, one of the apple trees, golden delicious suffered extensive rust, so I ordered this fungicide from Stark Brothers and sprayed the diseased apple tree. The fungicide was quite effective, most of the rust was gone, and the tree is healthy again.
Will this fungicide prevent fire blight on pear trees?
james q on May 21, 2016
BEST ANSWER: No, fire blight is a bacterial disease. A high elemental copper spray during early spring through 1/2" green tip will help. You can also apply streptomycin during bloom.
does this treat anthracose(sp) on peonies ?
thomas f on Nov 13, 2017
BEST ANSWER: Yes, this is the perfect treatment for foliar anthracnose. You can read the label here: //
Will this work on black knot on plum trees?
Tamar A on Sep 11, 2017
BEST ANSWER: Bonide Fung-Onil will solve your problem. It specifically treats black knot on plums. Here is a link to that page: ://
will Fungonil work for cedar-apple rust?
John B on Jul 8, 2017
BEST ANSWER: Yes, indeed it will. It is the best product we have for that problem and we have had many good reports on its effectiveness from customers.
Is this product pet friendly?
Andrea H on May 15, 2017
BEST ANSWER: I would say no. The label states not to allow people or pets to enter treated areas until sprays have dried or dusts have settled. It also states not to apply the product in a way that will contact other persons, or pets, either directly or through drift.
I left my fung oil outside over the winter I live in Westchester Countyy. Will it be effective?
Mel R on May 14, 2017
BEST ANSWER: The label only says "Store in a cool place. Protect from excessive heat." If a product will be affected by freezing, it usually says so on the label. I would proceed to use it.
Is this product natural and/or organic?
Joan D on Apr 4, 2017
BEST ANSWER: It is a chemical product. Here is a link to the Fungonil label: //
Is this product good for berry plants?
Michael L on Mar 12, 2017
BEST ANSWER: Here is a link to the label, which doesn't specify use for berry plants. // This is a natural product that will control fruit rot and powdery mildew on berries: //
Can fung-onil be used for control of scabs on pecan trees?
Iris W on Feb 7, 2017
BEST ANSWER: This would be a better product for use on pecan scab: //
Can this be used to control Peony botrytis?
Larry M on Jan 12, 2017
BEST ANSWER: The label states that the product controls botrytis blights on many types of plants. Unfortunately, peonies are not included on the label, so I cannot determine the effectiveness or recommended use of this product on peonies.
Can product be used for black spots on Holly trees?
Frank on Oct 20, 2016
BEST ANSWER: Thank you for your question. Yes, you can use this to treat black spot on hollies. Be sure to follow the label directions exactly for the best results.
Can a peach tree get fire blight?
joan g on Oct 10, 2016
BEST ANSWER: Thank you for your question. Fire blight affects apple and pear (especially quince) trees, but not peach trees.
When do you start and how often do you spray tree's with rust?
Stella on Aug 21, 2016
BEST ANSWER: Apple, crabapple, pear and quince can all be susceptible to rust, though there are certain varieties that have resistance. If you're experiencing a problem with rust, Bonide Fruit Tree Spray is excellent. Follow the label. Do not apply when temperatures exceed 85??F. Apply as directed, no more than once within 7 days, up to 2 times per year (max) as needed. Can be applied up to 14 days before harvest.
Is this safe for blueberry bushes? I know some will kill a blueberry. Not sure but I think it's copper you can't use on a Blueberry.
Berry lover on Jun 15, 2016
BEST ANSWER: This is not a copper fungicide. It does include application instructions for blueberry plants on the label, so it can be used on blueberries.
Can this product be applied to apple, pear, plum and nectarine trees?
Shirley M on May 29, 2016
BEST ANSWER: These are the types of plants/trees listed on the label: Apricot, Blueberry, Cherry, Filbert Hazelnut, Garlic, Leek, Nectarine, Onion, Ornamentals (Flowering Dogwood, Flowering Almond, Flowering Cherry, Flowering Crabapple, Hawthorn, Flowering Peach, Flowering Plum, Flowering Quince), Papaya, Peach, Plum, Potato, Shallot, Tomato, Walnut ??? and more (ornamentals/flowers)
Can this be used while in bloom?
Louanne P on Mar 23, 2016
BEST ANSWER: yes fungonil and other fungicides can be used in bloom,however I would avoid using any product that contains insecticides as this will harm bees and other pollinators that will be busy during bloom .

Customer Reviews

4.7 / 5.0
3 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Did a great job controlling blight in my tomato patch. Greatest thing since Copper Dragon
August 22, 2016
1 year ago
It works good on apple trees burn the grapes a little
July 7, 2017
7 months ago
Great Product
Stark Brothers is a great supplier, shipped promptly, with no hassles.
March 1, 2017
10 months ago