Terrariums are a great way to introduce kids to the joys of gardening. Little horticulturists will love transforming an empty jar into a little ecosystem. With just a few simple materials you’ll have an easy and engaging project that will teach kids about responsibility, ecosystems, and the life cycle of plants.
What you’ll need:
- A clear glass container with a lid like an empty pickle jar or a mason jar
- Small pebbles
- Potting soil
- Seeds or small plants – chia seeds, ferns, and moss are great plants for low maintenance terrariums.
- Decorations are an optional but fun way to put a personal touch on your terrarium. Rocks, sticks, seashells, marbles, or small plastic toys can make the terrarium visually interesting and personal.

What to do:
- Begin with a clean glass container.
- Place a layer of small pebbles on the bottom of your container. Your pebble player doesn’t need to be thick, just enough to allow the soil to drain.
- Fill your container about half full with the potting soil.
- Add seeds or small plants.
- Decorate as desired.
- Water your terrarium enough to dampen the soil – if your soil starts draining, you’ve over watered.

Caring for Your Terrarium
Place your terrarium in a sunny spot. A window sill with lots of indirect sunlight is a perfect spot for a terrarium to thrive. Water your terrarium as needed. You’ll know when it’s time to water when the soil is dry to the touch. Make sure to remove the lid from your terrarium once every other week to give your plant some fresh air. Encourage kids to observe the terrarium every day and document any changes they notice.
The Takeaway
Terrariums are excellent projects for kids of all ages. They offer a hand-on opportunity to learn about plants, ecosystems and gardening while encouraging creative expression.
Written By: Kallie Groves
Edited by: Ian Finch
November 6, 2021