greenhouses made from plastic bottles

2-Liter Soda Bottles have several great uses! If you cut the bottom off, you can use them to cover seedlings like mini greenhouses. They also protect them from frost, wind, and strong rain.

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You should also see :

Start Seeds at Home with a Seed 

Geodesic Dome 

Greenhouse 

Build a Cat Enclosure 

build a bench around a tree