Vermiculite is exfoliated volcanic rock used as a lightweight moisture-retentive compost additive which also improves aeration and gives insulation properties to growing media.1-3mm Grade: Ideal for seed covering & mixing with composts.
It is a naturally occurring mineral (magnesium-aluminium-iron-silicate) with a neutral PH that looks like golden flakes when used in horticulture.
It can absorb 3-4 times its weight in water and contains beneficial nutrients like potassium, magnesium, and calcium. It is excellent at aerating the soil whilst also retaining water and nutrients that it then releases over time, making it an exceptional compost additive for both seed sowing and propagation, whilst also benefiting plants that require moisture-rich conditions.
1-3mm grade vermiculite is particularly good for seed covering and mixing with composts.
If you’re looking for aeration and water retention, mix 4 parts of seed compost to 1 part of vermiculite. If you want to use on small surface-sown seeds, lightly cover them with vermiculite rather than the growing medium to give them extra moisture.
It is a naturally occurring mineral (magnesium-aluminium-iron-silicate) with a neutral PH that looks like golden flakes when used in horticulture.
It can absorb 3-4 times its weight in water and contains beneficial nutrients like potassium, magnesium, and calcium. It is excellent at aerating the soil whilst also retaining water and nutrients that it then releases over time, making it an exceptional compost additive for both seed sowing and propagation, whilst also benefiting plants that require moisture-rich conditions.
1-3mm grade vermiculite is particularly good for seed covering and mixing with composts.
If you’re looking for aeration and water retention, mix 4 parts of seed compost to 1 part of vermiculite. If you want to use on small surface-sown seeds, lightly cover them with vermiculite rather than the growing medium to give them extra moisture.
