Monterey Horticultural Oil

Monterey Horticultural Oil is a certified organic, odorless mineral oil spray built for year-round use — effective as a dormant oil in winter to smother overwintering pest eggs and larvae, and equally effective during the growing season as a contact insecticide and topical fungicide on fruit trees, nut trees, vegetables, small fruits, and roses. One certified organic product that covers two distinct application windows and three categories of problems: insects, mites, and fungal disease. Apply up to the day of harvest.

Dormant Application — Smother Overwintering Pests Before They Hatch

Applied in late winter and early spring before bud swell, Monterey Horticultural Oil smothers the overwintering eggs, larvae, and nymphs of mites, scale, leafhoppers, aphids, psyllids, thrips, and other common orchard and garden pests before they hatch into this year’s problem. That proactive dormant application interrupts pest cycles at their most vulnerable point and establishes cleaner growing conditions from the start of the season.

Growing Season Application — Contact Insecticide and Fungicide

During the growing season, Monterey Horticultural Oil works as a contact insecticide and topical fungicide simultaneously. The mineral oil coats and suffocates soft-bodied insects and mites on contact, and suppresses fungal diseases including black spot, powdery mildew, and rust. That dual growing-season coverage makes it practical for any situation where both insect pressure and disease management are ongoing concerns.

Certified Organic, Odorless, Use to Harvest

The certified organic formulation and complete lack of odor make Monterey Horticultural Oil one of the most comfortable and practical pest and disease management tools available for home orchardists who want organic-compatible options. No pre-harvest interval — apply up to and including harvest day throughout the entire growing season.

Always read and follow the complete label before use.

Why Growers Choose Monterey Horticultural Oil

• Year-round use — dormant application in winter, pest and disease control during the season
• Certified organic — compatible with organic growing programs
• Odorless — comfortable to use without unpleasant spray odor
• Controls mites, scale, aphids, thrips, leafhoppers, and more — broad pest coverage
• Controls black spot, powdery mildew, and rust — fungal disease coverage included
• Use to harvest — no pre-harvest interval

Always read and follow label directions:
Download The Label

Learn More About When and How to Spray Dormant Oil ›