Description
Monterey Liquid Copper Fungicide is an OMRI certified organic fungicide that controls and prevents the most common fungal and bacterial diseases affecting fruit trees, vegetables, roses, and ornamentals — powdery mildew, black spot, leaf curl, downy mildew, rusts, fruit rot, late blight, and leaf and fruit spot among them. Copper has been used as a plant fungicide for over a century because it works, and this liquid copper soap formulation is particularly effective because it bonds to plant surfaces and resists washing off. Safe to use up to the day of harvest. Apply during dormancy and throughout the growing season.
Protectant, Not Cure — Apply Before Disease Pressure Arrives
Understanding how copper fungicide works is the most important factor in getting results from it. Copper doesn’t eliminate an active infection — it prevents new infections from establishing by coating plant surfaces with a barrier that fungal and bacterial spores can’t penetrate. For fruit tree diseases like peach leaf curl, fire blight, and brown rot, that means dormant and early-season applications before symptoms appear, not reactive spraying after the disease has already taken hold. Thorough coverage of all leaf surfaces, fruit, and stems is essential — the copper must be on the plant to protect it.
Controls Eight Common Fruit Tree and Garden Diseases
The disease control list covers the most common fungal and bacterial problems home orchardists and gardeners face:
- Powdery Mildew
- Black Spot
- Leaf Curl
- Downy Mildew
- Rusts
- Fruit Rot
- Late Blight
- Leaf and Fruit Spot
OMRI Certified Organic — Use During Dormancy and Throughout the Season
The OMRI certification confirms this product meets organic gardening standards. Use during dormancy in late winter before buds break — particularly important for peach leaf curl and fire blight prevention — and continue applications through the growing season as needed. Can be used up to the day of harvest on edible crops.
Why Growers Choose Monterey Liquid Copper Fungicide
- OMRI certified organic — safe for organic home orchards and gardens
- Controls eight common diseases — powdery mildew, black spot, leaf curl, downy mildew, and more
- Liquid copper soap formula — bonds to plant surfaces and resists washing off
- Use up to day of harvest — safe for edible crops throughout the growing season
- Dormant and growing season use — broad application window for full-season protection
- Apply as a protectant — best results before disease pressure arrives or at first symptoms
