Vermiculite, Medium particle size, 5 L

Uses:

1. As a soil conditioner: Vermiculite up to one-half the volume of the soil is recommended. This creates air channels and allows the soil mix to breathe, providing the necessary air to maintain vigorous plant growth. Fast draining mixes benefit from the addition of vermiculite as it will allow the soil to hold water and air needed for growth.
2. Seed germination: either used alone or mixed with soil or peat, vermiculite is used to germinate seeds. Very little watering is required. When vermiculite is used alone, seedlings should be fed with a weak fertilizer solution when the first true leaves appear.
3. Soilless bonsai growing media: Combined with other materials such as peat, LECA or composted pine bark compost to produce soilless growing media for bonsai artists. These mixes promote faster root growth and gives quick anchorage to young roots. The mixture helps retain air, plant food and moisture, releasing them as the bonsai requires them.
4. Storing bulbs: The absorptive power of vermiculite acts as a regulator that prevents mildew and moisture fluctuation during the storage period. It will not absorb moisture from the inside of stored tubers, but it does take up free water from the outside, preventing storage rot.

Image depicting particle size

Vermiculite is an indespensible part of any growing medium for rooting cuttings in

Recommendation: Mix vermiculite with Peat and/or LECA