What is the best temperature for the Cup of Caterpillars™ ? Arah February 03, 2021 22:12 Updated Please keep the cup at room temperature, and away from any vents or windows. Related articles Can I open my Cup of Caterpillars™ When is the best time of year to raise butterflies? Are the caterpillars shipped frozen? What kind of butterfly does Insect Lore provide? When should I order caterpillars to release for Easter? Comments 0 comments Please sign in to leave a comment.