3 products
3 products
Sort by:
SINCLAIR Growmore 25kg
Sinclair Growmore 25kg is a classic all-purpose plant food trusted by gardeners and professionals alike for consistent, reliable results. Its balanced NPK formulation (7-7-7) provides equal amounts of nitrogen, phosphorus, and potassium — the three major nutrients required for strong, healthy plant development.
Suitable for use throughout the garden, Growmore encourages lush foliage, strong roots, and abundant blooms or crops. It’s ideal for use as a base fertiliser before planting, or as a top dressing during the growing season to maintain nutrient levels in the soil.
With a particle size of 0.5–3mm, Sinclair Growmore ensures even application and quick nutrient release, helping your plants thrive from root to leaf.
Key Benefits:
-
Balanced NPK 7-7-7 formulation for all-round plant health
-
Promotes vigorous growth, strong roots & abundant flowers or fruit
-
Suitable for most flowers, fruit & vegetables
-
Can be used as a base or top dressing
-
Uniform granules (0.5–3mm) for easy, even spreading
-
Ideal for beds, borders, lawns, containers & allotments
Sinclair Vermiculite Medium 100L
The Sinclair Vermiculite Medium 100L is a naturally occurring, non-toxic mica mineral that has been heat-expanded to form a lightweight, sterile, laminated structure—perfect for use in soil conditioning, propagation, and seed germination.
With its unique ability to absorb and store nutrients, vermiculite prevents essential minerals from being washed away, instead releasing them gradually to developing plant roots. Its excellent water-holding capacity keeps soil consistently moist, while its medium particle size ensures balanced aeration and drainage, preventing compaction and root stress.
When used as a seed covering, vermiculite helps insulate against temperature fluctuations, improving germination rates and protecting delicate seedlings. Medium-grade vermiculite is also ideal for use with cuttings, potting mixes, and container gardening, offering a versatile solution for both home growers and professional horticulturalists.
Key Benefits:
-
100L bag of medium-grade vermiculite
-
Retains and releases nutrients gradually
-
Excellent moisture retention & soil aeration
-
Reduces compaction and supports strong root growth
-
Provides insulation for seed germination
-
Lightweight, sterile & easy to handle
Sinclair Vermiculite Fine 100L
The Sinclair Vermiculite Fine 100L is a premium-grade growing medium designed to support seed germination, propagation, and healthy plant development. Made from naturally occurring, non-toxic mica that is heat-expanded, this fine vermiculite forms a lightweight, sterile, laminated structure that blends seamlessly into soil or compost.
With its excellent nutrient-holding capacity, vermiculite locks in essential minerals and gradually releases them to plant roots, reducing nutrient leaching and improving growth. Its superior water retention properties keep soil consistently moist, while also boosting aeration and drainage to prevent compaction.
When used as a seed covering, Sinclair Vermiculite provides insulation against temperature fluctuations, improving germination rates and protecting delicate seedlings. Lightweight and clean to handle, it is suitable for houseplants, propagation trays, garden beds, and commercial horticulture alike.
Key Benefits:
-
100L bag of fine-grade vermiculite
-
Retains nutrients & releases them gradually
-
Improves aeration, drainage & soil structure
-
Excellent water-holding capacity
-
Protects seeds from temperature stress
-
Sterile, lightweight & easy to mix with composts
Sinclair delivers trusted garden essentials that improve soil structure and provide balanced nutrition for strong, steady growth. Clear instructions and consistent quality make feeding and soil conditioning simple for home growers – a focused range from a long-standing UK horticultural name without the fuss of pro-only products.

