How to Keep Superworms Alive Long-Term
For reptile owners, particularly devoted bearded dragon keepers, superworms (Zophobas morio) are a popular...

For reptile owners, particularly devoted bearded dragon keepers, superworms (Zophobas morio) are a popular, protein-packed feeder insect. But anyone who's bought a tub knows the frustration of finding them dead days later. Understanding how long do superworms live and mastering their care is key to saving money, reducing waste, and ensuring nutritious meals for your scaly friend. With proper setup, these hardy larvae can thrive for months.
The Lifespan Lowdown
First, let's address the primary question: how long do superworms live? As larvae (the stage we use as feeders), superworms can live 6 months to a year under ideal captive conditions. This is significantly longer than mealworms! However, this lifespan is highly dependent on temperature, food, moisture, and housing. Left at room temperature without care, they may only survive a few weeks. Crucially, cooler temperatures (around 50-60°F or 10-15°C, like in a refrigerator) dramatically slow their metabolism. This is a common storage method, extending their usable life as feeders for 2-4 weeks or more, but it puts them in a dormant state – they won't eat or grow. Avoid freezing, as it kills them.
Creating the Ideal Superworm Sanctuary
The goal is to keep them active, healthy, and nutritious for your dragon long-term. Here's how:
The Right Housing
A smooth-sided plastic container (like a critter keeper or storage bin) is essential. They can't climb smooth plastic. Size depends on quantity, but ensure at least a few inches of depth. Crucially: Provide excellent ventilation. Use a lid made of fine mesh screen or drill numerous small holes. Stagnant air kills quickly.
Substrate is Key
Forget newspaper or paper towels. Superworms need a substrate they can burrow into. Oat bran, rolled oats, wheat bran, or a mix are ideal. This provides both bedding and a food source. Aim for 2-4 inches deep. Add a small amount of gut-load powder to the substrate for extra nutrition.
Hydration is Non-Negotiable (But Be Careful!)
Lack of moisture is a top killer. Never provide a water dish – superworms will drown. Instead, offer moisture-rich vegetables. Carrots, potatoes, sweet potatoes, squash, and zucchini are perfect. Slice them thickly or in chunks. Crucially, remove and replace any uneaten vegetable matter every 1-2 days to prevent deadly mold growth. This is your primary source of moisture.
Temperature Matters
Keep your superworm colony at room temperature (70-80°F or 21-27°C). This keeps them active but not developing too quickly. Avoid placing them near heaters, direct sunlight, or cold drafts. Cooler temps slow them down (good for fridge storage of portions), warmer temps speed up metabolism and pupation.
Regular Cleaning & Feeding
Every 1-2 weeks, sift the superworms out of their substrate using a colander or sieve. Discard the old, potentially moldy/frassy substrate. Clean the container with mild soap, rinse extremely well, and dry completely. Add fresh substrate and a new vegetable piece. Offer additional dry gut-load food (like specialized insect feed or bran) sprinkled lightly on top as needed.
Feeding Your Bearded Dragon: Quantity Matters
Now, about the secondary keyword: how many super worms for bearded dragon?
Juveniles (Under 18 months)
Superworms should be a treat or supplement, not a staple, due to their higher fat and harder chitin. Offer 1-3 superworms, 2-3 times per week max, alongside appropriate staple feeders like dubia roaches or crickets, and plentiful greens.
Adults (18+ months)
Can have superworms slightly more often as part of a varied diet, but still prioritize lower-fat staples and abundant vegetables. 3-5 superworms, 2-3 times per week is generally safe for most adults, depending on the dragon's size and activity level.
Always
Superworms should be gut-loaded (fed nutritious foods 24-48 hours before feeding) and lightly dusted with calcium powder (most feedings) and a multivitamin powder (1-2 times per week) just before offering them to your dragon. Never leave uneaten superworms loose in the vivarium – they can bite your dragon!
Keeping Pupation at Bay
Warm temperatures and ample food encourage superworms to pupate into darkling beetles. While beetles are harmless, the larvae stop eating beforehand and are less nutritious. If you see a worm curling into a "C" shape, it's preparing to pupate. To prevent this:
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Keep them in groups (they release a hormone that inhibits pupation).
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Avoid overly warm conditions (stick to 70-80°F).
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Use them regularly as feeders before they reach maximum size.
The Takeaway
By understanding how long do superworms live (6-12 months as larvae with care!) and providing a clean, ventilated habitat with proper substrate, moisture from vegetables, and room temperature, you can maintain a thriving colony. This saves you money, ensures your bearded dragon gets nutritious, gut-loaded feeders, and minimizes the hassle of frequent pet store runs. Remember to feed superworms appropriately based on your dragon's age and size, prioritizing variety and gut-loading. Happy worms mean a happy, healthy dragon!