Miniature Ecosystem Jar

The Miniature Ecosystem Jar

Hold an entire world in the palm of your hands! With the Miniature Ecosystem Jar activity, you'll become a biologist and an environmental scientist as you create a tiny, living biome that can thrive all on its own.

This fascinating project guides you through the steps of building a sealed, self-contained ecosystem. You'll learn how to carefully layer pebbles for drainage, add nutrient-rich soil, and introduce small plants and moss gathered from your own backyard or a park.

Once you add a little water and seal the jar, the magic of science begins! Watch as your tiny world creates its own miniature water cycle, seeing condensation form and "rain" back down on the plants. It's a perfect, hands-on way to explore photosynthesis, decomposition, and the delicate balance required for life to flourish.

Your finished creation is a beautiful, living piece of science to display on your desk or windowsill. Observe it each day to see how it grows and changes. Are you ready to build a world?