JH Biotech - Mildew Cure | Botanical Powdery Mildew Fungicide

Brand: JH Biotech

Mildew Cure

OMRI Listed | WSDA

Mildew Cure is a botanical fungicide for control of powdery mildew, built on 30 percent cottonseed oil, 30 percent corn oil, and 23 percent garlic oil. It is a FIFRA 25(b) exempt fungicide under Rule 40 CFR 152.25 and carries no EPA registration. The oil blend creates a physical barrier over treated crops that inhibits mildew spores from entering plant openings, which leaves little room for resistance build-up.

Mildew Cure is applied as a foliar spray. Mix 1 gallon of concentrate per 100 gallons of spray water for a 1 percent solution, or 1.5 fl oz per gallon and 32 fl oz per 25 gallons of final mix. Complete coverage of the plant is essential. Apply no more than once in a 7-day period and repeat as necessary. It works best preventatively, applied before disease symptoms appear.

Available Options

• 2.5 Gal (sold in packs of 2)
• 55 Gal Drum
• 250 Gal Tote

Key Features

• 30 percent cottonseed oil, 30 percent corn oil, 23 percent garlic oil
• OMRI Listed and approved under the WSDA Organic Program
• FIFRA 25(b) minimum-risk exempt with no EPA registration required
• Effectively controls fungus without residue or odd taste
• No re-entry interval and no pre-harvest interval per manufacturer
• Shows no phytotoxicity on most plants when used as instructed
• Physical barrier mode of action leaves little room for resistance build-up
• Less harmful to beneficial fauna than most fungicides
• Controls powdery mildew 7 to 10 days at 1 percent in company trials
• Shelf life up to 3 years in cool, shaded storage

Ideal Applications

• Powdery mildew control on cucurbits including melons, squash, and cucumbers
• Powdery mildew on tomatoes and other fruiting vegetables
• Powdery mildew on grapes
• Powdery mildew on tree crops
• Ornamental and flower crops
• Preventative rotation partner in organic or conventional disease programs

Organic Input Listings

• Listed by the Organic Materials Review Institute (OMRI) as Allowed with Restrictions for use in certified organic production under the USDA National Organic Program. Review the OMRI restriction before use.
• Registered with the Washington State Department of Agriculture Organic Program as an organic input material.

Organic input listings apply to the product exactly as named and are subject to change on renewal. Confirm current status with your certifier before use.

Handling Note

Run a phytotoxicity check on a small number of plants before treating large areas.

State Registration

Mildew Cure is a minimum-risk pesticide exempt from federal EPA registration under FIFRA Section 25(b). This federal exemption does not remove state requirements, and many states still require registration or notification before a 25(b) product may be sold there.

Per the manufacturer price list dated 7/22/2026, Mildew Cure is not registered for sale in: AL, AK, AR, CT, IN, KS, LA, MI, MT, NE, NH, ND, RI, SD, VT, WV. Buyers outside those states should confirm current registration status before ordering. Always read and follow the label.