Vermiculite is used widely in the horticultural industry for potting mixes, seed raising and hanging baskets.
It is used as an additive to potting mixes and growing mediums for its capacity to hold large amounts of moisture while maintaining good aeration properties.
Uses include both seed raising and potting mix. Vermiculite is often used in hanging basket mixes where its light weight and water holding characteristics are valued.
Vermiculite is a mineral that expands when heated (exfoliation). It improves soil aeration and moisture retention and allows good release of nutrients to feed roots, cuttings and seeds, improving growth rates.
Vermiculite used in Seed Raising
Especially useful for germinating very fine seeds, Vermiculite is sprinkled over the top of the seeds in a thin layer. It retains moisture and helps regulate temperature.
Vermiculite used in soil-less
Where a soil-less growing medium is required try mixture of :
- 4 parts peat moss
- 1 part vermiculite
- 1 part perlite
You can use more peat moss if required.
Perlite or Vermiculite – which one to use
We are often asked what the difference is between perlite and vermiculite, they look similar and both retain moisture and both provide some aeration for the roots of plants, however they are indeed different.
Perlite is a porous material made from volcanic glass (silicon rock), it is heated and expands to create the small balls of material.
Vermiculite is an alumno silicate, it is also heated and expands to form those little white balls.
Both will aerate soil however they are different Vermiculate retains more water than Perlite and will retain minerals and nutrients as well, it actually acts a little like a sponge.
Perlite will also retain moisture, it does this on the surface, but not as much as Vermiculate, but is better for drainage
So they are similar but different. Vermiculate is great for plants that need lots of water, Perlite is better for this that require some water but good drainage and aeration.
So for water hungry plants, use Vermiculite, for most use perlite.
Vermiculate Suppliers are listed below
2/104 Wedgewood Rd Hallam VIC 3803
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