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Hornworm FAQs

  • Are these the things I see on my tomato plant?

    Yes, but you can not feed the ones that were on your tomato plants to your animals, worms that eat the tomato plant have toxins in their body that will kill your animals.

  • Are they healthy for my animal?

    They are extremely healthy. They are high in calcium, low in fat, low in chitin and have an extremely soft exoskeleton so your animal will not have trouble digesting them. All this provides more usable nutrition for your animals. Calcium – 46.4mg/100g. Fat – 3.07%.

  • Can the horn on the end of them hurt them?

    No, it is just a piece of skin and nothing more, completely harmless.

  • Do they have dark juices squirt out of them when my animal bites them?

    No, their food does not contain green chlorophyll and yellow xanthrophyll to turn the worm green. The dark color is formed when yellow xanthrophyll mixes with the hornworms naturally blue blood, resulting in a green hornworm. The green chlorophyll is isolated by the worm and excreted in their frass (poop), thus dark colored frass occurs when the worm is fed leafy greens. Since our diet does not contain those chemicals our worms color remains blue like their blood. So the juices that squirt out of them will be a transparent light blue color, not dark.

  • How big do they get?

    3″-4″ and an average of 10g, but have been known to hit 12g.

  • How long do they live?

    Their normal life cycle lasts around three weeks at 75°F and as little as two weeks at 85°F. If for some reason you have extra large hornworms and no one to feed them to, you can put them in the refrigerator (40°F-42°F) and it will extend their life for a few days.

  • What do you feed them and how do you keep the cups?

    They are fed food that is specifically formulated for their optimum growth and nutrition. Keep the cups propped up so they can get plenty of ventilation.

  • What is a Tobacco Hornworm?

    Tobacco hornworms are the larvae of the Sphinx or Hawkmoth.

  • Do they smell?

    No, as long as you empty their feces out of the cup you will not have smelly worms.

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