If you’re dealing with garden pests like fungus gnats or grubs, you might be wondering where to buy nematodes. These beneficial microscopic worms are a powerful, natural solution, and the good news is they are widely available for purchase online. This guide will walk you through everything you need to know to get the right ones for your garden and use them effectively.
Using beneficial nematodes is a smart move for any organic gardener. They target and control over 200 species of soil-dwelling pests without harming your plants, pets, or good insects. Ordering them online is convenient, but knowing which type to buy and from where makes all the difference.
Where To Buy Nematodes – Available For Purchase Online
You can find nematodes at many online retailers specializing in garden supplies or biological controls. It’s not just about finding a seller, though. You need a reputable source that ships live products correctly. The key is to buy from suppliers who understand these are living organisms.
They need to be packed with a cold source and shipped quickly to ensure they arrive alive and ready to work. Many top garden centers now have robust online stores where you can order them just as easily as seeds or tools.
Top Online Retailers for Beneficial Nematodes
Several trusted online stores consistently receive good reviews from gardeners. Here are some of the best places to start your search:
- Arbico Organics: A leader in biological pest control with a huge selection of nematode species and very detailed product information.
- Nature’s Good Guys: Offers a variety of beneficial insects and nematodes, often in different size packages for small or large gardens.
- Gardener’s Supply Company: A reliable general garden retailer that carries popular nematode blends for common problems.
- Amazon: Many reputable garden brands sell through Amazon. Always check seller ratings and shipping details carefully to ensure live delivery.
- Local Extension Office Sales: Some university cooperative extension services sell nematodes online to residents in their state, which can be a great localized option.
Choosing the Right Type of Nematode
Not all nematodes are the same. Different species (or blends) target specific pests. Buying the wrong kind is a common mistake. Here’s a simple breakdown:
- Steinernema feltiae: Best for fungus gnats, thrips, and some root weevils. Ideal for potted plants and greenhouses.
- Heterorhabditis bacteriophora: Excellent for grubs, like Japanese beetle larvae, and other soil-dwelling beetles.
- Steinernema carpocapsae: Targets caterpillars, armyworms, and other pests near the soil surface.
- Blends: Many retailers offer mixes that cover a broad range of pests, which is a great choice for general garden protection.
How to Read Product Listings Correctly
When you’re browsing online, pay close attention to the details. The product title might say “for grub control,” but the description should specify the exact nematode species. Look for the scientific names listed above. Also check the coverage area—a package might cover 200 square feet, so you’ll need to calculate how many you need for your lawn or garden beds.
What to Expect When You Order Online
Your nematodes will not arrive in a bottle of liquid. They are typically shipped in a dormant state on a sponge or in a clay powder, inside a small vial or pouch. The package will include a cold pack if weather is warm. It’s crucial to open the package immediately and follow the storage or application instructions. Don’t let them sit in a hot mailbox all day.
Most companies ship them at the correct time for application in your region, but you can usually request a specific delivery date. This is helpful for planning your garden work. If your nematodes arrive and the packing ice is melted, don’t panic. They are likely still fine, but you should apply them as soon as possible.
Step-by-Step Guide to Applying Nematodes
Once you’ve received your order, proper application is key to success. Here’s what to do:
- Water First: Thoroughly water the area where you will apply the nematodes. The soil should be moist.
- Mix Carefully: Mix the nematodes with cool, non-chlorinated water in a watering can or sprayer. If you use tap water, let it sit out for a few hours so the chlorine evaporates.
- Apply Immediately: Stir the mixture gently and apply it right away to the target area. Do not mix in strong sunlight; early morning or evening is best.
- Keep Soil Moist: After application, keep the soil consistently moist for at least 7-10 days. This helps the nematodes move and find their prey.
- Repeat if Needed: For heavy infestations, a second application in 2-3 weeks may be necessary.
Common Mistakes to Avoid
Even with the best intentions, its easy to make an error that reduces effectiveness. Avoid these pitfalls:
- Applying to dry soil or letting the soil dry out after application.
- Using chlorinated water without letting it gas off first.
- Storing nematodes for too long before use; they are not a shelf-stable product.
- Applying in hot, direct sunlight or during the heat of the day.
- Expecting instant results. It can take a few weeks to see a significant reduction in pests.
When is the Best Time to Buy and Apply?
Timing is almost as important as the product itself. Nematodes are living things that are active in the soil within a specific temperature range (usually between 55°F and 90°F). The best times to apply are generally in the spring and fall when soil temperatures are moderate and pests are in their vulnerable larval stages.
For grub control, late summer to early fall is ideal. For fungus gnats, anytime you see them in your houseplants or greenhouse is fine. Because they are perishable, you should only order them when you are ready to apply them within a day or two of arrival.
Cost and Value Considerations
The cost of nematodes online can vary. A package for a small garden might cost around $20-$30, while large lawn treatments can cost more. Consider it an investment in your soil’s health. Unlike chemical pesticides, nematodes are safe and can reproduce, providing ongoing control. They also improve soil biology as they work.
When comparing prices, always factor in shipping costs. Some retailers include expedited shipping in the price because it’s essential. A slightly higher product cost with reliable shipping is better than a cheap product that arrives dead.
FAQ: Your Nematode Questions Answered
Are nematodes safe for my vegetable garden?
Absolutely. They are perfectly safe for edible plants, as well as for pets, children, and beneficial insects like earthworms and bees.
How long do they last in the soil?
They can persist and remain active for a several weeks, and sometimes longer if hosts are present. They are not a permanent solution, so reapplication may be needed seasonally.
Can I store extra nematodes?
It’s not recommended. They have a limited shelf life even in the fridge. It’s best to buy only what you need for one application and order fresh for next time.
Will nematodes harm earthworms?
No, beneficial nematodes specifically target pest insects. They do not attack earthworms, which are much larger organisms.
Where can I purchase nematodes locally?
Some local garden centers carry them in refrigerated sections. Calling ahead is wise. However, selection is often broader and more specific online, which is why many gardeners prefer to buy them there.
Finding where to buy nematodes available for purchase online is the first step toward a healthier, more balanced garden. By choosing the right species from a reputable seller and applying them correctly, you harness one of nature’s most effective pest controls. With a little planning, you can solve your pest problems naturally and safely.