Glass Terrariums and Living Ecosystems

Managing a terrarium is simple, but it depends on the glass. I use open-style bowls and jars that need very little water because the layers of charcoal and soil I pack into the base create their own mini-humidity cycle, keeping your Fittonia and ferns happy even if you forget to water them for a few days.

How I Build My Terrariums

When I put these together in my Sewri workshop, I don't just throw plants in a bowl. Each piece is a little ecosystem. I start with a drainage layer of stones to keep roots from sitting in water, followed by a layer of activated charcoal to keep the soil fresh and prevent mold. The soil mix I use for these is moisture-retentive, specifically suited for the humidity-loving plants I choose.

Plants That Thrive Inside

I prefer using plants that actually enjoy high humidity, rather than just anything that fits. You will usually find Fittonia (nerve plants), ferns, and live moss in my setups. These thrive in the enclosed or semi-enclosed environment of a glass bowl. Sometimes I tuck in small rocks or driftwood to make it feel like you are looking at a cross-section of a forest floor.

Care Tips

Terrariums are low-maintenance, but they are not 'no-maintenance'. Since the glass recycles moisture, you will find yourself watering much less often than your other houseplants. Place these in bright, indirect light. Avoid direct harsh sun, as the glass can heat up and act like a magnifying lens, which will scorch the moss and ferns inside. If you see too much condensation on the glass, just leave the lid off for a few hours to let it breathe.