Best Caterpillar Refills for Butterfly Kits: Top Picks for Home and Classroom
Finding reliable caterpillar refills for butterfly kits helps keep learning on track and engaging. Below are five highly relevant options that cover popular kits, shipping live caterpillars, and including essential rearing supplies. Each entry includes a quick overview, what you get, and how it supports hands-on STEM learning—from metamorphosis observation to family or classroom activities.
Summary of Selected Products
| Product | Brand | Live Caterpillars | Notes |
|---|---|---|---|
| Insect Lore 40 Live Baby Painted Lady Caterpillars | Insect Lore | 40 caterpillars total (8 cups × 5) | Includes food; classroom-ready; USA-grown |
| Insect Lore Cup of Caterpillars – 5 Live Caterpillars | Insect Lore | 5 caterpillars | Chrys-A-Lid holding log included |
| 10 Live Caterpillars for Butterfly Growing Kit | Nature Gift Store | 10 caterpillars | Includes food; two cups; cage not included |
| 5 Live Caterpillars for Butterfly Growing Kit | Nature Gift Store | 5 caterpillars | Includes directions; cage not included |
| Insect Lore Funtastic 4 Cups of Caterpillars | Insect Lore | 20 caterpillars (4 cups) | Includes Chrys-A-Lid log; US-grown |
Insect Lore 40 Live Baby Painted Lady Caterpillars

Grown in the USA and trusted since 1969, this refill includes 8 cups with 5 live baby Painted Lady caterpillars per cup plus all the needed food. The package supports a hands-on STEM learning experience for kids, families, and classrooms as caterpillars grow, form chrysalis, and transform into butterflies. It provides a complete set to observe metamorphosis from start to finish.
Insect Lore Cup of Caterpillars – 5 Live Caterpillars

This refill for the Butterfly Garden Kit pairs with Insect Lore’s reusable habitat. Each cup includes five live Painted Lady caterpillars and food, delivered with care from a California family-owned farm. It’s an ideal option for classrooms or families seeking a compact, year-to-year learning activity that demonstrates metamorphosis with a simple setup.
10 Live Caterpillars for Butterfly Growing Kit

Nature Gift Store’s 10 live Painted Lady caterpillars come in two cups with five caterpillars each and include food. The kit emphasizes user-friendly instructions and a hands-on learning experience, making it suitable for classrooms and home experiments focused on life cycles and metamorphosis without needing a cage in the initial setup.
5 Live Caterpillars for Butterfly Growing Kit

Nature Gift Store offers a compact refill with five Painted Lady caterpillars, shipped in a single cup. It includes simple directions to guide the metamorphosis process, enabling hands-on exploration of life cycles and butterfly development in a small-scale setup suitable for homes and classrooms.
Nature Gift Store 5 Live Caterpillars Shipped Now

This refill includes five Painted Lady caterpillars plus rearing supplies (excluding a net cage), such as food, tools, and a life cycle coloring page. It is designed to simplify setup for ongoing classroom or family projects, emphasizing practical steps for nurturing and observing metamorphosis.
Insect Lore Funtastic 4 Cups of Caterpillars

Four cups totaling 20 Painted Lady caterpillars include a Chrys-A-Lid holding log and food, making this refill ideal for larger groups. Grown in the USA for over 50 years, it supports a three-week immersive metamorphosis journey that’s accessible for families and classrooms aiming to explore butterfly life cycles together.
Buying Guide
- Number of caterpillars: Consider how many participants you have and whether you need multiple stages of metamorphosis to observe. Larger kits like 20 or 40 caterpillars provide more simultaneous observation opportunities.
- Inclusions: Check what’s included beyond caterpillars (food, cage or log, coloring pages, holding logs). Some kits exclude cages, which may affect your setup choices.
- Age and setting: For younger children, kits with clear instructions and simple setups work best. Classrooms may benefit from larger cups and more structured materials.
- Care requirements: Look for kits that provide detailed care instructions and reliable supplies to support healthy caterpillars and successful metamorphosis.
- Source and trust: US-grown caterpillars from established suppliers can offer consistency and educational credibility for schools and families seeking reliability.
- Reusability: If you plan multiple cycles, consider refill options that pair well with reusable habitats or cages to maximize long-term value.
- Educational value: Choose kits that emphasize metamorphosis, life cycles, and hands-on observation to align with STEM learning goals.
- Allergies and safety: Ensure food and handling instructions are appropriate for your participants, and provide safe handling guidance for live insects.
These products offer varied scales and kit contents suitable for home education, classrooms, or maker spaces focused on butterfly metamorphosis. By comparing cup counts, inclusions, and whether cages or logs are provided, you can select a refill that best matches your learning goals and setup preferences.