Keeping Hornworms Alive
Every number here comes from our own care guides, and links back to the guide it came from.
Refrigerate at
50–55°F
Cold storage slows them down and extends how long they last. Drawn from 30 mentions across our guides. Read the full guide.
Humidity
65–90%
Too dry and they shrivel; too wet and they mould. Drawn from 317 mentions across our guides. Read the full guide.
They keep for
7–18 days
How long they stay usable when stored properly. Drawn from 34 mentions across our guides. Read the full guide.
Feed them
Named in our guides alongside this feeder. Read the full guide.
Keep them in
Keep the cup somewhere cool and dry — a warm, humid spot like a bathroom cabinet is asking for trouble.
From our guide. Read the full guide.
What kills them
Mould in the cup is almost always a temperature problem, not bad stock.
From our guide. Read the full guide.
A field is missing when our guides don't agree closely enough to publish one answer. We hold those back rather than guess.