BIG MAMA GRO-BLOCK™ is the largest block ever produced by Grodan. It is 8″ x 8″ x 8″ and contains over twice the amount of Rockwool as the popular HUGO GRO-BLOCK™.
When your plant outgrows its current block, just place it on top of BIG MAMA.
BIG MAMA is solid wool and does not have a precut hole thus it is suitable to hold any smaller-sized block on top (even a HUGO).
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