Hornworm Cup Care Guide - Caring For Your Hornworm Cups



Storage and Growth Management

Optimal Temperature: Keep hornworms at around 82°F for maximum growth. They grow quickly and can double in size daily at warm temperatures.Slowing Growth: To slow their growth, store them at cooler temperatures between 55°F and 65°F.Refrigeration: To maintain the desired size, you can place the hornworms in the refrigerator at 45°F for up to two days, then remove them.

Setting Up and Daily Maintenance

Initial Setup: Place the cup food-side up to ensure worms crawl towards the food. The feces will drop to the lid for easy cleaning.

Ventilation: Ensure proper airflow by slightly propping up the cup or using a ventilated lid.Cleaning: Remove waste daily by opening the lid and dumping out the droppings.

Food Supply: Hornworm cups come with enough food to last 7-10 days. If you run out, additional chow can be purchased.Handling and FeedingHandling: Hornworms are easy to handle. Use your hands or tongs to pick them up, avoiding their harmless horn.Feeding to Pets: Simply place the hornworm in your pet’s enclosure. Their bright color often stimulates feeding in picky eaters.

Safety and Disposal

Safe Disposal: Place live hornworms in an escape-proof bag or container, freeze for at least 24 hours, and then dispose of them in the garbage. Never release them into the wild.

Avoid Toxic Plants: Never feed hornworms leaves from tomato plants as they can become toxic to reptiles.


Mold: If mold appears in the cup, remove it promptly.Excessive moisture can cause mold growth, so maintain adequate ventilation and avoid high humidity.

Growth Issues: Monitor the temperature and humidity closely. Too much moisture can lead to bacterial growth and harm the hornworms. Double check yoor temps and ensure they are warm. If worms are cold they will grow slowly so avoid putting them near ar vents, in the breezeway, garage or cold basement.


y following this guide, even the most novice customers will be able to care for their hornworm cups effectively. For more detailed information and support, customers can visit Pioneer Feeders or contact our customer service.