About three weeks — the kits describe the full transformation as “3 weeks” or “approximately three weeks.”
Common habitats include a 24-inch collapsible pavilion or an 18-inch pop-up mesh habitat, depending on the kit.
Many kits list ages starting around 4 years and up; children's books typically target early elementary readers, roughly 4–8 or 5–10 years depending on the title.
The regional field guides vary; examples in the listings document about 102, 164, and 198 species.
They emphasize color-organized layouts, full-color photographs, life-size silhouettes, phenograms, and range maps to help distinguish look-alikes and show when and where species are common.
They support science/STEM topics such as life cycles and metamorphosis, pollination and ecology, and observation and sequencing skills for young learners.
Classroom kits are described as supplying 33 live caterpillars; the giant kit includes a voucher redeemable for five baby caterpillars.
The giant pop-up habitat is described as a reusable mesh habitat designed for observing caterpillars and butterflies.