Horticultural Grit 6-8mm Washed, approximately 900 grams pink granite from Ireland. We use this to add to our compost mixes for alpines and plants that require a gritty compost. We also use this grit to top dress all our plants it helps to deter slugs and snails and makes weeding much easier. The grit is washed and contains no lime as it is crushed granite from a quarry in Ireland so ideal for all plants. Grit is sent out in plastic container.