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Watch how you can grow a basil plant from seeds planted into lava rocks all contained in a reusable biosphere! Greenball is a vegetation ecosystem where a plant will grow and thrive on volcanic rocks. The grains at the bottom of the Greenball are naturally white effusive lava rock (perlite). The Greenball includes plant seeds that adapt perfectly to the white substrate and will take root quickly between the small grains. Once the sprouts have grown the small plants can be transplanted into soil in a pot or garden. The Greenball will then be ready to grow more plants using your favourite seeds!