Closed Terrarium Basics
Master the fundamental science and craft of building self-sustaining ecosystems in glass. No guesswork, just thriving green spaces.
A closed terrarium is more than plants in a jar—it is a carefully balanced miniature world. In this foundational course, we demystify the mechanics of moisture, light, and soil.
You'll learn why certain plants melt into mush while others thrive for decades. You'll master the false bottom, discover the magic of springtails, and walk away with a piece of nature that requires almost zero maintenance.
Course lessons
Plan Your Closed Terrarium Build
Turn your available light, container, plants, and materials into a practical build plan before you begin.
The Science of the Glass
Understand the water cycle and microclimate that make a closed terrarium work.
Substrate & Selection
Gathering the right layers, soils, and species for long-term success.
Building the Ecosystem
Step-by-step assembly of your terrarium layers and hardscape.
Maintenance & Troubleshooting
Pruning, watering cycles, and dealing with mold and pests.