







🌱 Protect your garden like a pro—organic power that pests fear!
Monterey Horticultural Oil is a 1-gallon organic fungicide, insecticide, and miticide that controls a broad spectrum of fungal diseases and insect pests. OMRI listed and USDA NOP compliant, it’s safe for use on vegetables, fruits, ornamentals, and indoor plants. Designed for easy spray application, it offers versatile, eco-friendly protection to keep your garden thriving and pest-free.







| ASIN | B06XC64WYB |
| Best Sellers Rank | #27,909 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #874 in Insect & Pest Repellent Sprays |
| Customer Reviews | 4.4 4.4 out of 5 stars (173) |
| Date First Available | March 1, 2017 |
| Department | unisex-adult |
| Manufacturer | Monterey Lawn & Garden |
| Package Dimensions | 11.69 x 7.17 x 4.45 inches; 7.63 Pounds |
N**K
Fantastic product
OMG...this is just a tremendous winner. I was able to encourage my pesky visitors to go to the neighbors yard...what a relief for my vegetable garden, trees and creatures that live here without causing damage. Do get rid of the plastic though...it's important!
C**P
Great product great value
We use this for our fruit trees. It works great and I love that it’s organic.. It’s a good value for the money. I would definitely recommend and I will be buying it againwhen needed.
B**N
Monterey Horticultural Oil Is Easy To Mix And Apply!
Monterey Horticultural Oil is extremely easy to use and apply with a sprayer. I use a 2 gallon sprayer. Spray when the outside temperature is AT LEAST 41 degrees Fahrenheit. Here on Long Island, I’ve sprayed my Peach, Nectarine and Apple trees three times so far. We have had more rain than typical, so I’ll spray at least two more times before Spring time. I combine this product with Monterey Liqui-Cop and a touch of dish soap. Make sure you apply a little extra solution to the “inside elbows” AND the bottoms of the branches! I believe I should realize a very good crop in 2026!
C**A
It Worked!
I used this product to control web worms, so far I haven't seen any signs of the critters. It was easy to apply.
A**E
Good to use on fruit trees over the winter while they’re dormant
I have 14 dwarf fruit trees growing on my property. Although the trees are still too young to produce crops, they are susceptible to fungal issues and insect problems. I bought horticultural oil to spray on the trees while they were dormant at the end of the winter. It has seemed to help with some of the problems that we had last year, as I’m not seeing those problems now.
B**T
safe and organic way to control my Apple leaf rust and control insects. A 5 star review
Only product I will use because it is a safe and organic way to control my Apple leaf rust and control insects which is the only way I go with regard to my family's health. It has effectively treated the apple rust, and since I don't have insect problems I assume it is working. As a gardener I never use insecticides but rather rely on introducing beneficial insects, plants and now this.
D**T
Great product
This stuff really works I use it for powdery mildew and mites in my garden It needs to be reduced for use in a hose end sprayer about 50 percent or so Still potent enough to work very well Wear a good mask and glasses when spraying for protection Good value for the money
P**N
poor packaging
the product is great. whoever packaged this did a terrible job. just put in a box and shipped. the bottle was damaged and product was everywhere. the box is soaked with product. they should send me 2 more bottles since they are damaged and leaked.
Trustpilot
3 weeks ago
2 months ago