Close Menu


Item: HWO
Care Info
Simple Science
Fun Stuff
Hornworms   Nothing grows quite like these giant, green caterpillars!
Fun to observe, measure, and draw. Hornworms go from tiny to HUGE in just a few short weeks. Safe for children to handle.
  • Cup of 2 hornworms (with food and ventilated lid)
  • Bag of wood shavings
  • More hornworm information and activities available for download FREE on this website.
Tiny hornworms arrive in their own cup, complete with food and ventilated lid. Watch them eat, eat, eat and become the biggest green caterpillars you've ever seen (4-6 inches long)! As hornworms become too large for their cup, spread shavings on the bottom of your box, habitat or mesh house, remove cup's lid and place open cup inside, on its side. Caterpillars will continue to eat until food is gone, then leave the cup and explore their new home. Soon they will burrow down into the shavings in order to pupate. Keep until they emerge (up to 180 days) or bury outside for spring emergence. Your hornworms will become large, beautiful moths known by three common names: sphinx moth, hummingbird moth or hawk moth.
Availability: Can be shipped from March through October.
For instructions on how to care for your hornworms, view or download:
Ready to learn more about your big, green caterpillars? Get students reading, drawing, counting and writing about hornworms with these activities.
How does a hornworm get from an egg to a moth? Read about the different stages of a hornworm’s growth. Then students can color, cut and create their own version of the life cycle.
Learn all the parts of your hornworm! Worksheet and key.
Start your scientific inquiry about hornworms by making a guess (estimate) about their final size, then track their growth to see if you predicted correctly.
Build observation, drawing, math and language skills by looking closely at your hornworms.
Hornworm activities that are just for fun…
A hornworm investigates some leaves it might eat. A sheet just for coloring fun.
Get ready for a challenge... Here's a word search that will keep you looking for all the parts of a hornworm.