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Chlorothalonil DF Fungicide

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Chlorothalonil 82.5 DF is a contact fungicide with no resistance issues. It is easy to use with a natural adhesion to plant surfaces. This product provides preventative disease protection and keeps working after repeated use.

Target Pests

This formula targets dollar spot brown patch leaf spot melting out brown blight gray leaf-spot red thread anthracnose copper spot stem rust dichondra and a variety of other fungi.

For Use In

With such a strong formula and long-lasting residual this product is perfect for residential and commercial lawns athletic fields playgrounds golf courses and landscapes. However it is not to be used on sod farms.


To apply, simply mix with 1/2 to 3/4 of a tank of water and spray in areas where disease maybe. Reapply every 7 to 14 days since there are no resistance issue with this fast acting product. Chlorothalonil is a multi-site product.

Coverage Area

For Golf Course Greens and Tees, use approximately 1.82 to 3.5 fluid oz per 1000 square feet. Do not exceed label warning and for tougher, more advanced fungi, use up to 5 fluid oz.

For Lawns and Other Turf Sites, use 5 to 8.9 fluid oz per 1000 square feet.

Time to Kill

Not only is Chlorothalonil quick to destroy fungi but has a long-lasting residual to prevent it from coming back.

Mix Rate

1.2 lb per acre

Active Ingredient

Chlorothalonil 82.5%

Chlorothalonil DF Fungicide

Product Q & A

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Browse 10 questions Browse 10 questions and 8 answers
How much is mixed per gallon of water for rhizosphaera?
Mike R on Jun 6, 2018
How is it applied to spruce trees?
Chris on Apr 26, 2017
BEST ANSWER: Yes it can be applied to a spruce tree, use approximately 1.82 to 3.5 fluid oz per 1000 square feet.
Dan on Apr 13, 2017
BEST ANSWER: Yes this product is labeled to be used on spruce.
Is it safe to use on garden plants?
A shopper on May 31, 2018
Is this a liquid?
What is the mixture rate per gallon?
JeffE on Jul 10, 2018
BEST ANSWER: This product is not a liquid and is mixed with water. To determine the mix rate we would need to know what you are trying to control and how large an area.

All this information can be found on product label.

But if you call or email direct we can get you exact applications for your needs.
do you water in chlorothanil after application?
A shopper on Jul 8, 2018
BEST ANSWER: No. I do not water it in. It worked perfectly.
what do you recommend for rhizosphaera needle cast on spruce trees?
Bill on May 18, 2017
BEST ANSWER: You can apply any of the chlorothalonil products on the tree to combat this disease. Do regular maintenance on the tree to prevent any spreading and help the tree heal. I have attached a good read over this by the University of Minnesota.
May this product be used to control powdery mildew on tart cherry trees? I'm struggling to identify a product to control PM on stone fruit trees...
BCH on May 15, 2017
BEST ANSWER: Yes, Chlorothalonil DF Fungicide
can be used on powdery mildew on your cherry tree.

will it kill mushrooms from buried tree stumps
jojo on Sep 7, 2016
BEST ANSWER: Chlorothalonil DF Fungicide does not have mushrooms on the label. Apply a nitrogen-rich fertilizer, such as ammonium sulfate, to the lawn at a rate of 5 pounds per 1,000 square feet of lawn. Nitrogen speeds up the decaying process of fungi food.
Will this product kill exsiting fungal diseases and prevent them?
Andrew on May 14, 2016
BEST ANSWER: Yes the Chlorothalonil is curative and preventative, so it should take care of the fungus problem.

Customer Reviews

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Great service
I ordered this and it was shipped in a timely manner. I have used this once since purchasing and am very pleased with this product.
July 7, 2012

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