The most reliable sources are online worm suppliers and local garden centers
You can buy composting worms from three main routes: online specialty suppliers, local garden centers and nurseries, and bait shops. Online suppliers like Uncle Jim's Worm Farm, Worm Factory, and Red Wigglers are the most consistent source because they stock the right species year-round and ship directly to your door. Local garden centers often carry worms in spring and summer but may run out or not stock them at all. Bait and tackle shops sometimes sell red wigglers, though their stock is unpredictable and they may not know whether the worms are suitable for composting bins versus fishing.
Prices vary widely depending on quantity and supplier. A starter batch of 1 pound (roughly 1,000 worms) typically costs between $25 and $50 shipped. Larger quantities cost less per worm. Local pickup is usually cheaper than shipping because you avoid the box and insulation costs, but you have to find a supplier nearby who has stock on hand.
Key Takeaways
- Red wigglers and European nightcrawlers are the two species that work best in home compost bins; avoid regular garden earthworms.
- Online worm farms ship year-round and may provide live arrival, while local sources are cheaper but only reliable during growing season.
- A starter batch is usually 1 pound of worms, which is enough for a small bin and costs $25 to $50 including shipping.
- Bait shops sell worms but may not know the species or whether they are suited to composting rather than fishing.
- Worms arrive in bedding material and need to rest in a cool place for 24 hours before you add them to your bin.
What species to look for when you shop
Red wigglers (Eisenia fetida) are the standard choice for home composting bins. They thrive in the warm, moist, food-rich environment of a compost bin and reproduce quickly. They are smaller than garden earthworms and stay in the top layers of bedding where the food is, so they do not burrow down and escape.
European nightcrawlers (Eisenia hortensis) are larger and eat more slowly than red wigglers, so they work better if you have a larger bin or produce a lot of food scraps. They are less common and usually cost more. Some people use a mix of both species.
Do not buy regular garden earthworms or night crawlers marketed for fishing. They burrow deep and will try to escape from a bin. Ask the supplier directly what species they sell, and avoid any listing that just says "earthworms" without a species name.
Online worm suppliers and what to expect from them
Uncle Jim's Worm Farm, Worm Factory, and Red Wigglers are the largest mail-order sources. They ship worms in bedding material (usually coconut coir or peat moss) in a breathable box designed to keep them alive during transit. Shipping takes 3 to 7 days depending on your location and the carrier. Most suppliers may provide live arrival and will replace dead worms if you report the problem within a set time (usually 24 to 48 hours of delivery).
When your worms arrive, open the box in a cool place and let them rest in their shipping bedding for 24 hours before you transfer them to your bin. Do not expose them to direct sunlight or extreme temperature changes. If the bedding looks dry, mist it lightly with water. If it looks waterlogged, leave the box open for an hour to let it air out.
Online suppliers often sell starter kits that include a bin, bedding, and worms together. These kits cost more upfront but save you the trouble of sourcing each piece separately. Read the reviews to see whether the bin design works well for the worms and whether the bedding quality is good.
Local garden centers and nurseries
Garden centers and nurseries in your area may stock composting worms during spring and early summer when people are starting new bins. Call ahead to ask whether they have red wigglers in stock and what the price is per pound. Some centers order worms on request if you give them a few days' notice.
The advantage of buying locally is that you avoid shipping costs and can inspect the worms before you buy. The disadvantage is that stock is seasonal and unpredictable. If you wait until late summer or fall, you may find that the supplier has sold out and will not restock until spring.
Bait and tackle shops
Bait shops sell worms year-round because they serve fishing customers. However, they usually stock whatever species is cheapest or easiest to breed, which may not be red wigglers. Ask the shop owner what species they have and whether they are suitable for composting. Some bait shops do carry red wigglers, especially if they are near a gardening community.
Bait shop worms are often cheaper than online suppliers because there is no shipping cost. However, the storage conditions may not be ideal—worms kept in a warm shop or in direct sunlight may be stressed or dying. Inspect them before you buy and ask how long they have been in stock.
How many worms you need to start
A starter batch of 1 pound of worms is enough for a small bin (about 10 gallons) or a medium bin (about 20 gallons) if you feed them slowly at first. One pound is roughly 1,000 red wigglers. If you have a larger bin or plan to add a lot of food scraps, start with 2 pounds.
Worms reproduce in the bin, so you do not need to buy more unless your bin is very large or you want to speed up the process. A healthy population will double in 3 to 6 months under good conditions. If you start with too few worms, the bin will take longer to break down food, but the worms will eventually multiply to match the food supply.
Cost comparison: online, local, and bait shops
| Source | Cost per pound | Shipping | Availability | Best for |
|---|---|---|---|---|
| Online worm farm | $25–$50 | Included | Year-round | may provide species and live arrival |
| Local garden center | $20–$40 | None | Spring and summer | Inspecting worms before buying |
| Bait shop | $15–$35 | None | Year-round | Budget-conscious buyers near a shop |
What to do if you cannot find worms locally
If your local garden centers do not stock worms and there are no bait shops nearby, online ordering is your best option. Shipping costs are built into the price, and most suppliers may provide live arrival. Order in spring or early summer when shipping is fastest and worms are least stressed by temperature extremes.
If you want to avoid mail order, you can also start a compost bin without worms and let wild worms colonize it naturally over time. This takes longer—usually several months—but works if you are patient and your bin is in contact with soil where worms can enter. Bury the bin partially in the ground or place it directly on soil rather than on concrete.
Frequently Asked Questions
Can I use regular earthworms from my garden instead of red wigglers?
No. Garden earthworms burrow deep and will try to escape from a bin. Red wigglers and European nightcrawlers are adapted to stay in the top layers where food is. Using the wrong species will result in worms leaving the bin or dying.
How long do worms last once they arrive?
Worms can survive in their shipping bedding for 2 to 3 weeks if kept cool and moist. However, you should transfer them to your bin within a few days. The longer they stay in shipping bedding, the more stressed they become and the slower they reproduce.
What if the worms arrive dead or dying?
Most online suppliers may provide live arrival and will replace dead worms if you report the problem within 24 to 48 hours. Take photos of the box and the worms as soon as you open it, and contact the supplier with the photos and your order number. Keep the shipping box and bedding as proof.
Is it cheaper to buy worms in bulk?
Yes. Buying 5 or 10 pounds at once costs less per worm than buying 1 pound. However, you only need 1 to 2 pounds to start. If you buy more than you need, you will have to store the extra worms, which requires space and care. Start small and order more later if your bin needs it.
Can I order worms in winter?
Yes, but shipping in winter is riskier because worms can freeze or overheat during transit. Most suppliers add extra insulation in winter, but delays or extreme cold can still kill worms. Spring and early summer are the safest times to order. If you must order in winter, choose a supplier with a strong live-arrival may provide.