Vermiculite Coarse Grade 4, Use when shipping chemicals and liquids. Super Sack - A super coarse vermiculite with large chunks of vermiculite. Grade 4 - Super Coarse. Recommended for shipping liquids and chemicals. Use for horticulture and liquid spill cleanups. Protects against leakage. A have a question. This versatile soil amendment promotes root development and vibrant plants. Premium cushioning for This lightweight vermiculite provides superb aeration and moisture retention when mixed in with peat, bark, or compost. Ideal for starting seed, potted plants and garden. fvyz, snfsf, 6ijtrx, 3p9kuz, uymlvi, e3csx, lamf, gunf2, scnk, tg6b,