Grodan Pargro QD 6 in x 36 in Slab

Driest value-priced rockwool on the market. Better quality and drainage than other value-priced rock wool. Slabs come in clearly marked UV resistant poly sleeves for ease of use. Recommended for larger, long term crops with extensive roots like peppers, tomatoes, or cucumbers. Typically, seedlings in blocks are placed onto slabs.