Bottle Biosphere Guide Full __top__

A piece of fine plastic mesh or a dried moss layer (such as sphagnum). This prevents the soil from washing down into the drainage gravel.

Leave the cap off for a day to reduce the internal humidity level. bottle biosphere guide full

Small, slow-growing plants that thrive in high humidity. A piece of fine plastic mesh or a

Aquarium gravel, small stones, or leca (lightweight expanded clay aggregate). Small, slow-growing plants that thrive in high humidity

Add a small amount of water (do not over-saturate) and seal the lid tightly. The moisture will evaporate, condense on the glass, and "rain" back down, sustaining the plants for years without being opened.

For a sealed environment, select small, slow-growing plants that thrive in high humidity and indirect light. Making a Bottle Terrarium + Closed Terrarium Basics

Plants inside a biosphere must thrive in high-humidity, low-airflow environments and grow at a manageable pace. Never mix desert plants like cacti with moisture-loving tropical plants. Top Choices for Tropical Biospheres