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Grodan Rockwool Starter Cubes

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Product Description

Rockwool Starter cubes come in strips of 15, three strips to a pack. They are 1.5 x 1.5" x 1.5". They are primarily used for seeds and cuttings. They are individually wrapped to retain moisture longer. They have a small hole punched into them to place your seed or cutting. You can fit 72 cubes into a standard propagation tray (6 rows by 12 rows), though you should only put in about 50 to allow for air movement between them (5 rows x 10 rows). They are normally transplanted into either Grow Rocks or placed into a larger Rockwool Cube (that's why the ones below have large holes in them...)

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