What Is Lost Coast Plant Therapy?
Lost Coast Plant Therapy is an eco-friendly, natural 3-in-1 pesticide that works as an insecticide, miticide, and fungicide to control soft-bodied pests and plant diseases without harsh chemicals. It effectively controls spider mites, aphids, thrips, whiteflies, powdery mildew, mold, botrytis, and more on contact.
Made with natural and organic ingredients, our biodegradable formula is safe for beneficial insects when used as directed. Whether you're growing houseplants, vegetables, or managing large-scale crops, Lost Coast Plant Therapy provides a natural, effective, residue-free solution you can trust.
What Can Lost Coast Plant Therapy Treat?
A powerful pest control solution for plants, effective against common insects, mites, and plant diseases.
How Our Natural Pest Control Works
When sprayed, the formula coats insects and eggs, blocking respiration and disrupting digestion, dehydrating them without the use of synthetic inputs. Because it works on contact through a mechanical process, pests cannot build resistance.
For plant diseases like powdery mildew, mold, and botrytis, the formula disrupts fungal growth on the plant surface while helping to normalize pH without leaving harmful residue.
✓ Safe for food crops & medicinal plants.
✓ Will pass parts-per-billion lab testing.
✓ Can be used up to day of harvest.
Read Instructions | See Ingredients
25(b) Minimum Risk Pesticide
Exempt from EPA registration under FIFRA 25(b).
CCOF Organic Approved
Approved for use in certified organic agriculture.
Clean Green Certified
Independently certified for use in organic farming.
Demeter Biodynamic
Approved for use on Demeter Biodynamic Certified Farms.
Safe for Beneficial Insects
Safe for bees, ladybugs, or praying mantises when used as directed.
Made in California, USA
Manufactured in the United States with high-quality ingredients.
Available in Sizes for Every Garden
From home gardeners to commercial farms, Lost Coast Plant Therapy is a liquid concentrate that scales with your needs.
Apply as a foliar spray or soil drench up to the day of harvest.
Available in 4 oz, 12 oz, 32 oz, 1 gallon, and 2.5 gallons. Mix 1 oz per gallon of water for standard application, or increase to 2 oz per gallon for heavy infestations.
Not sure which size is right for you? A 4 oz bottle makes up to 4 gallons of ready-to-use spray, ideal for small home gardens. Commercial growers typically start with 1 or 2.5 gallons.
Approved for Certified Organic & Biodynamic Farming
Lost Coast Plant Therapy is approved for use by California Certified Organic Farmers (CCOF) and is listed as an approved input for Demeter Biodynamic Certified Farms in the USA, two of the most respected standards in organic and ecological agriculture.
It is also Clean Green Certified, ensuring compliance with strict guidelines for sustainable growing practices.
These certifications ensure our formula meets strict standards for organic integrity, environmental responsibility, and safe use in both home and professional growing environments, making it a trusted choice for organic gardening and farming.
Learn more about:
CCOF | Clean Green | Demeter Biodynamic
Boost the Formula to 2 oz Per Gallon
First, try applying more often at 1 oz per gallon, many people see better results with increased frequency rather than a higher concentration.
If you’re still not getting results for russet mites, thrips, aphids, or heavy infestations, you can:
✓ Increase the amount of Lost Coast Plant Therapy by 1-2 more ounces.
✓Add 1-3 ounces of Isopropyl Alcohol, any strength.
✓ Use boosted rates for 1–2 applications, then return to the standard rate once resolved.
ALWAYS test first to find what works best for your garden.
YES!
Use Lost Coast Plant Therapy as a soil drench to treat fungus gnats, root aphids, and soil-dwelling pests, or as a weekly preventative treatment. Does not stress the plant.
Mix 1 oz per gallon of water, same as for foliar spraying. Use as directed on the label.
OUR STORY
For over 53 years, our family has nurtured a love for plants and a commitment to organic gardening. Inspired by the challenges we faced on our own farm, Lost Coast Plant Therapy was created to provide a natural and effective way to protect plants without resorting to the traditional harsh chemicals. We know how much your plants mean to you because we’ve been there. With Lost Coast Plant Therapy you can grow confidently, knowing you’re choosing what’s best for your plants and the environment.
Bulk & Wholesale Pricing for Farms and Stores
We offer Bulk Pricing for Farms and Wholesale pricing for Stores. Please fill out one of the applications below.
Let’s Grow Together in 2026!
We are very excited to join our fellow Americans around the country participating in the Victory Garden Alliance, a national campaign to grow food in 2026. Inspired by the Victory Gardens of World War II, this movement reminds us of the importance of self-reliance, reconnecting with where our food comes from, and regaining the joy of getting our hands dirty and filling our bellies with clean, homegrown food.
By pledging to plant something edible in 2026, you’ll be part of a nationwide effort to build stronger, healthier communities. You can also connect with like-minded individuals by joining Zoom meetings to gain inspiration and learn from guest speakers who are passionate about food sovereignty and sustainability.
Let’s cultivate a better future, one seed at a time. Visit the Victory Garden Alliance to learn more, sign the pledge, and grow with us!
HOW TO SPRAY
Saturate the entire plant, especially underside of leaves and stem of the plant. Our product must be applied liberally to cover all areas of the plant surface in order for it to be effective and adhere to the target insect, egg case or larvae.
Shake well before measuring
Shake the sprayer again before using
Saturate the entire plant
Fruit Plants
Keep your fruit trees and berry plants clean with Lost Coast Plant Therapy. Controls spider mites, aphids, thrips, whiteflies, mold and powdery mildew on contact.
Flower Plants
Wash away powdery mildew, rust, mold and soft bodided insects from flowers and ornamentals. Controls aphids and whiteflies without burning petals or leaves.
Vegetable Gardens
Keep your vegetable plants clean with Lost Coast Plant Therapy. Controls botrytis, powdery mildew, aphids, thrips, and spider mites. Approved for use up to harvest.
Real Results from Growers
Protect your plants naturally. Join 20,000+ growers using a safer way to control pests and plant diseases.
Alex Wagnon
No more pests! I was recommended this product from a friend. It has worked great for me. A few plants had white spots and we treated them 3 days in a row. Make sure to spray both sides of leaves.
@headygrowz
Lost Coast Plant Therapy saved my plants when nothing else could. I can not recommend this stuff enough. Don’t waste your time and money with anything else if you’re seriously trying to save your garden!
Steve Plum
Plants look bright green and healthy! My plants were looking pretty sad before I sprayed them with Lost Coast Plant Therapy. Now they're looking happy again! Bright green leaves and healthy. Worth the investment for my plants.
@Leathua_Grows
I absolutely love your product! The smell is so pleasant and it works so well! I use it at home as well as bringing it in to my work, I use it on my 1400 starts!
@steeleydan83
I bought this product about 2 weeks ago, had a small aphid problem in my veg tent and a powdery mildew problem in my flower room. I’ve sprayed everything twice now, the PM is virtually gone and I haven’t seen an aphid since. You just got a lifetime customer!
@nicks.nugs
When I first started battling PM issues I tried many products. I found that most of them would either burn my plants or just did not do anything to fight the PM. I’m so happy I’ve found Lost Coast Plant Therapy, the battle is over and I’ve officially won the war!
How can we help you today?
Give us a call! Please leave a message and one of the owners will call you back.
Prefer email? Email us and we will do our best to answer any inquiries you may have. For quick answers, see our FAQ.
We will get back to you as soon as possible!
Can Lost Coast Plant Therapy be used in organic gardening?
Can Lost Coast Plant Therapy be used in organic gardening?
Yes! Our product is Clean Green Certified and approved for use in organic farming and certified Demeter Biodynamic farming. It's safe for both small gardens and large-scale agricultural use when used as directed.
Is Lost Coast Plant Therapy safe for bees?
Is Lost Coast Plant Therapy safe for bees?
Yes, Lost Coast Plant Therapy is a minimum risk pesticide made with natural and organic ingredients. Because it works only on contact with soft-bodied insects, it does not impact hard-bodied beneficial insects like bees, ladybugs, or praying mantises when used as directed.
Can I spray during flowering?
Can I spray during flowering?
Yes, Lost Coast Plant Therapy can be used during flowering when used as directed. It’s designed to control pests and plant diseases without harsh residues, making it a great option throughout the grow cycle.
For best results and application tips, see Instructions and How It Works.
Does it work on powdery mildew?
Does it work on powdery mildew?
Yes! Independent greenhouse trials conducted with Cornell University’s College of Agriculture and Life Sciences (CALS) showed that Lost Coast Plant Therapy achieved up to 99% control of powdery mildew in a 14-day test on heavily infested plants.
Does it leave any harmful residue on plants?
Does it leave any harmful residue on plants?
No, Lost Coast Plant Therapy does not leave any harmful residue. It controls pests through suffocation and dehydration without affecting plant surfaces. See our Ingredients here.
How do I get rid of spider mites naturally?
How do I get rid of spider mites naturally?
Spider mites can be controlled naturally by applying Lost Coast Plant Therapy, a plant-based insecticide and miticide made with soy oil, peppermint essential oil, and citric acid. It works by coating the mites, their eggs, and larvae on contact, suffocating and dehydrating them without synthetic chemicals. Mix 1 oz per gallon of water and saturate the entire plant, especially the undersides of leaves.
