Bringing you the best biological tools
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for your growing system

Bringing you the best biological tools for your growing system

Shop Now


Our mission is to support growers in creating and maintaining successful biological control programs in their unique growing environment. We provide quality beneficial insects and microbial solutions for the professional grower, farmer and to the green industry.
We provide a carefully curated array of the most useful beneficial insects available, and combine this approach with biological products that are synergistic with your goals to reduce chemical inputs in your operation.

Find the Optimal Solution for Your Plant Pests and Diseases

Pest Control
Disease Control
Our Team

See what we’re brewing!

Fine Bubble Diffusion technology provides optimum conditions for making Compost Tea by thoroughly agitating the solution to facilitate extraction of compost components, and by maintaining high levels of dissolved oxygen.

Compost Tea

Prevention starts here

Weekly monitoring is critical for any grower, and crucial for a successful biocontrol program. One of the most important aspects of monitoring is consistency, but having the proper tools can help.


Dig Into Your Crop Details

Take a closer look at just a few of the crop systems we can assist you with. This just scratches the surface, so ask our team if you don’t see your specialty crop.


Growing Cannabis comes with a unique set of challenges and well-adapted pests. Manage them with the right tools, knowledge, and mindset.


Consumer demand for perfect ornamentals helps drive the market for agrochemicals. Reduce the need by effectively utilizing biological controls.


Greenhouse vegetables have a long history of successful biological control. Despite this, challenges still exist. Integrate your growing skills with our biocontrol expertise.


Small fruits are high value crops with low tolerance for injury. Integrating multiple tactics helps maintain profit while reducing environmental and human health risk.

Small Fruit

What our customers are saying
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At Spokane Community College Greenhouse, we strive to produce the highest quality plants while implementing biological pest control. We grow hundreds of different crops within a total of 6000 square feet. We rely on Sound Horticulture for supplying controls that we can rely on. The staff is always very helpful determining which choices are best for a specific IPM. After several years, our greenhouses have become healthier and customers  truly appreciate the efforts of our decisions.

Tyler Beasley, Spokane Community College, Spokane, WA

Sound Horticulture is not only an excellent company, but a very knowledgeable resource. They provide high-end products at reasonable prices. We as a business can always rely on the Sound Horticulture team to provide our shipments on time every time. They’ve helped me combat and exterminate russets mites, one of the hardest pests to get rid of in cultivation. Hands down the nicest and most professional group doing pest management. I would recommend this company until I’m blue in the face.

Aaron Skinner, TABA Management, Clinton Township, MI

In Harmony Sustainable Landscapes and I have been associated with Alison for over 20 years.  She introduced us to the Compost Tea systems in the beginning and since then has been an amazing source of information and products.  I have never met anyone as passionate and compassionate about the earth and all of its inhabitants. Sound Horticulture is the best source of information, materials, and help to understand the steps for the best results in the horticultural business. Alison and her team are amazing.

Ladd Smith, In Harmony Sustainable Landscapes, Bothell, WA

It may be couple days late for the creepy-crawly Halloween posts, but the cooler weather brought by the start of Autumn also marks a shift in many growers’ beneficial insect selection!  

As temperatures settle down into the 40°F range in many locations, growers treating for Vine Weevil may consider switching to Steinernema kraussei from nematode species they use throughout the warmer months like S. feltiae and S. carpocapsae (the species in this video).  New research suggests that S. feltiae may have a better tolerance to cold than previously understood, however this is yet to be published in any peer-reviewed journal.

In any light, it is always important to make sure that you are choosing the right beneficial for your current environmental conditions!

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Everybody knows about great entomopathogenic fungi (EPF) pesticides like PFR-97 and BioCeres WP, but do you know how they work?

Well it actually can depend on the product! Beauvaria bassiana and Isaria fumosorosea, the fungus species in BioCeres WP and PFR-97 respectively, both introduce asexual fungal spores known as “blastospores” that proliferate inside the insect pest and grow within the hemolymph (insect blood) to kill the insect.

PFR-97 applies these blastospores directly to the insect, but BioCeres WP apply them via fungal structures known as conidia. Conidia are non-motile spores that form germ tubes to insert blastospores into the cuticle of pest insects.

Conidia products like BioCeres tend to be more stable in the environment but will take longer to infect the pest (~8-10 hours) whereas blastopore products are less stable but quicker to infect (~6 hours).

Head to our website or give us a call to purchase or learn more about these products, and more!

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Robber flies are another naturally occurring friend to keep an eye out for in your garden. They typically eat flying insects by chasing them down and injecting a paralyzing toxin with their beaks. Once paralyzed, digestive enzymes allow the robber fly to suck the juices out of their catch. ...

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There are over 5000 different species of spider in the family Salticidae, commonly known as jumping spiders.

They usually do not live more than about a year, but some species can live longer in cooler climates. At night, they hide in small spaces in the vegetation. To communicate, some species will dance with each other in courtship rituals.

Jumping spiders are visual hunters, and hunt most often during the day. They pounce on and eat all sorts of insects and invertebrates. These little friends can contribute to your natural biocontrol if you let them!

PC: Alec Blume

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Sometimes when life gets tough, you gotta be like this hoverfly and just hold on. ...

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Powdery mildew typically appears as distinct white patches on upper leaf surfaces. The powder consists of mycelium and spore producing structures.

PM spreads mainly through air, clothing, equipment, and tools. It is frequently introduced from contaminated plant material.

Temperature and humidity fluctuations, high humidity, and low air movement can exacerbate issues.

There are plenty of products on the market with varying efficacy against powdery mildews. Dr. Zamir Punja from Simon Fraser University has published efficacy trials for some of the commonly available products.

Not all powdery mildews are the same species, but identification is difficult. Golovinomyces spp. are the main PM species attacking greenhouse and indoor cannabis.


Scott C, Zamir P, Sabaratnam S. 2021. Diseases of Cannabis in British Columbia. Abbotsford (BC): British Columbia Ministry of Agriculture.

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