Gro-Sure Horticultural Medium - Vermiculite - 2-5mm - Twin Pack

Vermiculite is a natural mineral that is heated to expand into lightweight, porous particles. It improves soil aeration, retains moisture, and helps reduce nutrient loss, leading to healthier plant growth.

A common ratio is one part vermiculite to two or three parts potting soil. Mix thoroughly to ensure even distribution for optimal aeration and moisture retention.

Yes, a thin layer of vermiculite is excellent for covering seeds. It helps maintain consistent moisture, which is crucial for germination, and provides a light, protective covering.

Yes, vermiculite is non-toxic and beneficial for virtually all plants, from delicate seedlings to mature vegetables and houseplants. It helps create a more forgiving growing medium.

Vermiculite has a cation exchange capacity, meaning it can absorb and hold onto nutrients from fertilizers or compost. It then slowly releases these nutrients back to the plant roots, reducing waste and improving nutrient availability.

No, vermiculite actually helps insulate plants and roots against temperature fluctuations, offering protection from both frost and excessive heat.

Vermiculite is a mineral and does not break down. It will continue to provide aeration and moisture retention benefits for as long as it remains in the soil, often for many years.

Handle gently and consider moistening slightly before mixing to reduce dust.

Reduce the proportion of vermiculite in the mix or ensure the container has adequate drainage holes. Vermiculite retains moisture, so it's best used in well-draining mixes.

Ensure seeds are sown at the correct depth and that consistent moisture is maintained. Vermiculite helps retain moisture, but the base compost also needs to be suitable for the specific seed type.

Mix it thoroughly with heavier soil components or use it as a top layer that is lightly pressed into the soil surface or covered by a mulch.