Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Grodan Delta 4 Block(16), 3"x3"x2.5" with hole are the most uniform blocks available on the market. They feature improved grooves at the base to promote better drainage. These growing blocks are used for direct sowing or "blocking on" of Macro and Multiblock raised plants. A-OK 36/40 starter plugs fit well into the hole sizes provided by these blocks. The blocks can then be placed on top of a slab to provide for a larger growing volume. 16 blocks in 2 strips.

Call 828-299-9989 or email newagegardens@gmail.com for inquiries and for case orders
48 per + shipping(21 lbs) Case cost: $306.78