Sinclair Vermiculite Fine 100L

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£29.00

Sinclair Vermiculite Fine 100L — Fine-grade expanded vermiculite for seed sowing, propagation and growing-media moisture management.

Selected for professional horticulture, nursery production and garden or landscape applications where the product suits the crop and growing conditions.

Key benefits

  • 1–3mm particle size, as specified by Sinclair
  • Manufacturer-stated water holding: 419ml per litre of vermiculite
  • Fine structure suited to delicate seed-sowing work
  • Layered mineral structure helps retain water and soluble nutrients

Fine-grade vermiculite for propagation

The fine 1–3mm grade is suitable for fine seed-covering work and incorporation into appropriately designed propagation media. Its layered structure helps manage water and soluble nutrients around developing roots.

Using as a seed covering

Use a light, even covering where suitable for the crop. Follow seed-specific sowing depth and light requirements, and maintain moisture without saturating the propagation medium.

Choosing fine or medium

Fine vermiculite is smaller in particle size and has a higher manufacturer-stated water-holding figure than the medium grade. Choose by seed size, substrate texture and desired water management.

Sinclair Vermiculite Fine 100L product details

Grade Fine
Particle size 1–3mm
Water holding (manufacturer figure) 419ml per litre
Bag size 100L
Manufacturer product reference FXS1702S

Sinclair Vermiculite Fine 100L FAQs

What is the difference between fine and medium vermiculite?

Fine is 1–3mm with a stated water holding of 419ml per litre; medium is 2–5mm with 381ml per litre.

Can fine vermiculite be used for seed covering?

Yes, where the crop benefits from a light covering. Check whether the seed needs light for germination.

Does it replace fertiliser?

No. Vermiculite can retain some dissolved nutrients but is not a complete fertiliser.

Can it be mixed with propagation compost?

Yes. Choose the proportion according to the physical requirements of the crop and finished substrate.

How much is supplied?

One 100L bag.

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Sinclair Vermiculite Fine 100L

Sinclair Vermiculite Fine 100L

£29.00

£29.00