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Shelf Life
![]() Watch plants grow before your eyes with a bookshelf terrarium. Cover the bottom of a jar with gravel, then add 1/4 inch of ground charcoal. Mix 2 parts potting soil, 2 parts peat, and 1 part builder's sand; add to jar. Dig small holes for plants, such as sweet flag or Chinese elm. Spray completely with water before putting on lid. |
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