Is medium vermiculite suitable for covering seeds?
Yes. Sinclair identifies the medium grade for seed covering. Match the covering depth to the seed species.
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Perlite & Vermiculite
5 products
5 products
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Sinclair Vermiculite Medium 100L — Medium-grade expanded vermiculite for professional seed covering, propagation and growing-medium blending.
Selected for professional horticulture, nursery production and garden or landscape applications where the product suits the crop and growing conditions.
Key benefits
- 2–5mm particle size, as specified by Sinclair
- Manufacturer-stated water holding: 381ml per litre of vermiculite
- Layered mineral structure helps retain water and soluble nutrients
- Useful as a seed covering and to improve aeration in growing media
How medium vermiculite works
Expanded vermiculite is a lightweight mineral with a layered structure and cation-exchange properties. In an appropriate growing-medium blend it helps buffer moisture and retain soluble nutrients, while the medium grade provides additional structure.
Seed covering and propagation
Apply an appropriate light covering over sown seed where the crop requires it. Maintain even moisture and follow the species-specific sowing depth and germination conditions; do not bury light-germinating seed unnecessarily.
Blending into growing media
Choose the inclusion rate for the crop and substrate. Vermiculite holds water, so consider the effect on the finished mix rather than assuming it will always improve drainage.
Sinclair Vermiculite Medium 100L product details
| Grade | Medium |
|---|---|
| Particle size | 2–5mm |
| Water holding (manufacturer figure) | 381ml per litre |
| Bag size | 100L |
| Manufacturer product reference | FXS1730S |
Sinclair Vermiculite Medium 100L FAQs
What is the particle size?
The manufacturer specifies 2–5mm. Does vermiculite hold nutrients?
Yes. Its layered mineral structure provides cation-exchange capacity, helping retain some soluble nutrients in a growing medium. Is it the same as perlite?
No. Vermiculite generally contributes more moisture and nutrient retention, while perlite is commonly selected primarily to increase air space. How much is supplied?
One 100L bag.
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.
Planet Earth Horticultural Perlite 2 – 5mm – 10L
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Planet Earth Horticultural Perlite 2 – 5mm – 10L
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Versatile 2 – 5mm horticultural perlite for creating lighter, better-draining growing media with more air space around developing roots.
Planet Earth Horticultural Perlite is a lightweight growing media additive for improving drainage, aeration and structure in compost and potting mixes. Supplied in a convenient 10L bag, it is an easy way to open up dense growing media and create a healthier balance of air and moisture around plant roots.
The 2 – 5mm horticultural grade creates additional pore space throughout the growing medium. This helps excess water drain more freely while maintaining air spaces around the root zone, reducing the tendency of compost and other media to become dense and compacted.
Its versatility makes it useful for everything from propagation and potting-on to houseplants, container growing and general compost improvement. The manageable 10L bag is particularly practical when only a modest quantity of perlite is required.
Why choose Planet Earth Horticultural Perlite?
- 2 – 5mm horticultural grade – a versatile particle size for propagation, potting mixes and general growing media improvement.
- Improves drainage – creates additional pore space so excess water can move more freely through the growing medium.
- Increases aeration – helps maintain valuable air space around developing roots.
- Helps reduce compaction – keeps compost and potting mixes lighter and more open.
- Supports healthy root development – improved air and water movement creates more favourable conditions around the root zone.
- Useful for propagation – ideal for improving the structure and drainage of growing media used for seedlings and cuttings.
- Easy to blend – mix into compost and other growing media according to the drainage and aeration required.
- Convenient 10L bag – a practical size for smaller growing areas, propagation work, houseplants and container gardening.
What is Planet Earth Perlite suitable for?
Planet Earth Perlite can be incorporated into compost and other growing media wherever additional drainage, aeration or structural openness is required.
It is particularly useful for growing mixes that tend to settle or compact over time. Adding perlite creates spaces between the finer particles of the growing medium, helping air reach the root zone while allowing excess irrigation water to drain away more readily.
The 2 – 5mm grade is well suited to propagation mixes, potting-on, container plants and general compost improvement. It can also be useful for indoor plants where a dense potting mix needs additional drainage and aeration.
Because the amount required depends on the crop and the characteristics of the existing growing medium, Planet Earth Perlite can be blended at different proportions to produce the structure and drainage needed for the application.
How to use Planet Earth Perlite
Mix Planet Earth Perlite thoroughly through your chosen compost or growing medium before planting or potting-on. Adjust the proportion according to how much additional drainage and aeration the existing mix requires.
For propagation and general potting mixes, distribute the perlite evenly rather than allowing it to collect in isolated pockets. An even blend creates consistent air spaces and drainage throughout the root zone.
When improving an existing dense growing medium, gradually incorporate perlite until the mix has the lighter, more open structure required for the plants being grown.
Perlite is very lightweight and can produce fine dust during handling. Pour and mix it carefully, preferably in a well-ventilated area, and avoid breathing airborne dust.
Planet Earth Perlite 10L product details
| Brand | Planet Earth |
|---|---|
| Product | Horticultural Perlite |
| Bag size | 10L |
| Particle size | 2 – 5mm |
| Product format | Lightweight granular growing media additive |
| Key applications | Drainage, aeration, propagation, potting mixes & growing media improvement |
| Suitable for | Propagation, potting-on, containers, houseplants & general horticultural growing media |
Planet Earth Perlite FAQs
What is horticultural perlite used for?
Horticultural perlite is mixed into compost and other growing media to increase drainage and aeration while maintaining a lighter, more open structure around plant roots.
What size is Planet Earth Perlite?
This Planet Earth Perlite is supplied in a 10L bag and has a horticultural particle size of 2 – 5mm.
Does perlite improve drainage?
Yes. Perlite creates additional pore space within the growing medium, helping excess water move through the mix more freely and reducing the tendency for dense compost to remain waterlogged.
Does perlite improve soil aeration?
Yes. The spaces created by perlite help maintain air within the growing medium, giving developing roots access to a better-aerated root environment.
Can Planet Earth Perlite be mixed with compost?
Yes. Planet Earth Perlite can be mixed thoroughly with compost and other growing media where improved drainage, aeration and structure are required.
Is 2 – 5mm perlite suitable for propagation?
Yes. A 2 – 5mm horticultural grade is suitable for incorporating into propagation mixes where an open structure, good drainage and air around developing roots are important.
Can I use Planet Earth Perlite for houseplants?
Yes. Perlite is useful for houseplant potting mixes, particularly where the existing compost is dense or where the plant benefits from improved drainage and root-zone aeration.
Can perlite help stop compost becoming compacted?
Yes. Mixing perlite through compost introduces rigid pore spaces that help maintain a lighter, more open structure as the growing medium settles.
How much perlite should I add to compost?
The amount depends on the existing growing medium and the drainage requirements of the plants being grown. Add enough to achieve the required balance of drainage, aeration and moisture retention rather than relying on one fixed ratio for every crop.
Is a 10L bag of perlite suitable for small growing projects?
Yes. The 10L format is particularly convenient for propagation, houseplants, container growing and smaller batches of customised potting mix where a large professional bag is unnecessary.
Should I wear a mask when handling perlite?
Perlite can create fine airborne dust when poured or mixed. Handle it carefully in a well-ventilated area and avoid breathing the dust. Suitable respiratory protection can be used where dust cannot otherwise be adequately controlled.
Growers Own Horticultural Perlite 2 – 5mm 100L
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Growers Own Horticultural Perlite 2 – 5mm 100L
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Professional-grade 2 – 5mm horticultural perlite for improved drainage, aeration and healthier root development.
Growers Own Horticultural Perlite is a lightweight, pH-neutral growing media additive made from natural volcanic rock. Supplied in a generous 100L bag with a 2 – 5mm particle size, it helps create a lighter, more open growing medium with improved drainage and air space around developing roots.
Its porous structure makes Growers Own Perlite particularly useful for improving compost and potting mixes where additional aeration and drainage are required. It can help reduce compaction and maintain a more favourable root environment, making it a versatile choice for professional growers, nurseries, propagation and general horticultural use.
Why choose Growers Own Horticultural Perlite?
- 2 – 5mm horticultural grade – a versatile particle size for potting mixes, propagation and general growing media applications.
- Improves drainage – helps excess water move through the growing medium and reduces the risk of waterlogged conditions.
- Increases aeration – creates additional air space within compost and growing media to support healthy root development.
- Helps reduce compaction – maintains a lighter, more open structure within growing media.
- pH-neutral – can be incorporated into growing media without significantly altering its pH balance.
- Natural volcanic material – produced from naturally occurring volcanic rock.
- Lightweight and sterile – easy to incorporate into growing media and suitable for a broad range of horticultural applications.
- 100L professional-size bag – a practical volume for nurseries, commercial growers and larger-scale growing requirements.
What is Growers Own Perlite suitable for?
Growers Own Perlite can be mixed with compost, soil and other growing media where greater drainage, aeration or structural stability is required. Its 2 – 5mm particle size makes it suitable for a wide range of horticultural applications, including potting mixes, container growing, propagation and soil conditioning.
It is particularly useful where a growing medium is prone to becoming dense or compacted. Adding perlite creates additional pore space within the mix, helping air and water move more freely around the root zone while supporting strong, healthy root development.
How to use Growers Own Perlite
Mix Growers Own Perlite thoroughly through your chosen compost, soil or growing medium according to the drainage and aeration requirements of the crop. The amount required will vary depending on the existing growing medium and the plants being grown.
The 2 – 5mm grade can be incorporated into potting and propagation mixes to improve structure, or used when conditioning heavier growing media where additional drainage and air space are needed.
Product details
| Brand | Growers Own |
|---|---|
| Product | Horticultural Perlite |
| Product type | Growing media additive |
| Bag size | 100L |
| Particle size | 2 – 5mm |
| Material | Natural volcanic rock |
| pH | Neutral |
| Key applications | Drainage, aeration, potting mixes, propagation & soil conditioning |
| Full pallet quantity | 20 |
Growers Own Perlite FAQs
What is horticultural perlite used for?
Horticultural perlite is added to compost, soil and other growing media to improve drainage, increase aeration and help maintain an open structure around plant roots.
What grade is Growers Own Perlite?
Growers Own Horticultural Perlite has a particle size of 2 – 5mm, providing a versatile grade for potting mixes, propagation and general horticultural use.
Does perlite improve soil drainage?
Yes. Adding perlite creates additional pore space within the growing medium, allowing excess water to drain more freely while increasing the amount of air available around the root zone.
Can Growers Own Perlite be mixed with compost?
Yes. Growers Own Perlite can be mixed thoroughly with compost and other growing media to create a lighter, more open structure with improved drainage and aeration.
Is Growers Own Perlite pH-neutral?
Yes. Growers Own Perlite is a pH-neutral growing media additive made from natural volcanic rock.
Is 2 – 5mm perlite suitable for propagation?
Yes. The 2 – 5mm horticultural grade can be incorporated into propagation and potting mixes where improved drainage, aeration and growing media structure are required.
How many 100L bags are on a full pallet?
A full pallet contains 20 x 100L bags of Growers Own Perlite. The pallet quantity is provided for logistical and stock-planning purposes and does not mean the product must be purchased by the full pallet.
The Growers Own Perlite 50L is designed for incorporating into suitable growing-media mixes to increase air-filled porosity and modify drainage.
Perlite is a lightweight mineral growing-media component commonly used to alter the physical properties of a substrate. The appropriate inclusion rate depends on the crop, base medium, container, irrigation strategy and production conditions.
Key benefits
- Product type: Horticultural Perlite
- Designed for incorporating into suitable growing-media mixes to increase air-filled porosity and modify drainage
- Stated size/capacity: 50L
- Suitable for horticultural use where appropriate
Using perlite in growing media
Blend perlite evenly through a compatible substrate where increased aeration or a change in drainage behaviour is required. Avoid assuming one fixed percentage suits every crop: container depth, peat/coir content, irrigation frequency and crop water demand all affect the ideal physical structure.
Handle dry perlite carefully to minimise airborne dust. Lightly damping material before mixing can help where appropriate.
Root-zone management
Adding perlite changes how water and air occupy pore spaces in the growing medium. Monitor irrigation after changing a mix because a substrate with more perlite may wet and dry differently from the original formulation.
Good working practice
Keep equipment and materials clean and clearly identified. Follow the instructions for any fertiliser, additive or treatment being prepared and use appropriate PPE where required by the product label or workplace assessment.
Storage & maintenance
Store the product clean, dry and protected from damage. Electronic meters should be maintained according to their manufacturer instructions; measuring equipment should be replaced if markings or condition no longer allow reliable use.
Growers Own Perlite 50L product details
| Product | Growers Own Perlite 50L |
|---|---|
| Product type | Horticultural Perlite |
| Primary use | incorporating into suitable growing-media mixes to increase air-filled porosity and modify drainage |
| Stated size / capacity | 50L |
Growers Own Perlite 50L FAQs
What is this product used for?
Incorporating into suitable growing-media mixes to increase air-filled porosity and modify drainage. How should it be used?
Follow the product instructions and use it only for compatible horticultural applications. How should it be stored?
Keep it clean, dry and protected from physical damage or contamination. Should equipment be cleaned between uses?
Yes where appropriate, particularly when moving between different solutions or materials. Can one measurement represent every part of a crop or growing area?
Not necessarily. Use representative sampling where conditions may vary. When should the product be replaced?
Replace damaged equipment or material that can no longer be used reliably for its intended purpose. Does this replace crop-specific guidance?
No. Use measurements or growing-media components alongside the requirements of the crop and production system. What should I do if a reading or result looks wrong?
Repeat the measurement or check the equipment and method before making significant adjustments.
The Perlite & Vermiculite collection includes essential media components used to improve aeration, drainage and moisture retention in growing substrates.
Supplied through horticultural distributors, Perlite and Vermiculite support precise media formulation across professional nursery production.