It seems there’s an infinite number of ways to create gardens out of recycled soda bottles. I remember a project we did when I taught elementary school that involved two 2 liter bottles, cut and reassembled to create multiple layers, with an aquarium on the bottom and a terrarium at top. I could not find that exact set of instructions, but this Soda Bottle Ecosystem comes closest, the only real difference being that it uses 3 bottles. This will require some adult supervision, due to the use of an Exacto Knife.
A very similar method is used to create a Hydroponic Garden. Hydroponic gardens grow plants without soil. While the systems can be quite complex, involving special equipment, this is a simple system you can create at home. After looking over these materials, try entering “hydroponic”, “aquaponic,” and “soda bottle” in your search engine for some more ideas, including vertical gardens.”
This video shows how to grow a rain forest in a garden. You might want to add a little clear packing tape when you join the two pieces. What other ideas do you have for a soda bottle terrarium?
These are just three ideas from a multitude of possibilities. Have a look at this Pinterest Board for more ideas for reusing soda bottles to create magical gardens.