Mills Soil & Cork
Updated 18 Oct 2026
Mills Soil & Cork is a premium potting mix of peat, coco chips and fine cork, pre-fertilised with slow-release nutrients for the first 4-6 weeks. The added cork improves aeration in the root zone. For indoor and outdoor use.
Usage & Instructions
Do not add Basis A & B for the first 4-6 weeks; Start-R and Vitalize can be used from the start.
Product Specifications
Description
Premium blend of peat, coco chips and fine cork. The cork gives extra oxygen to the roots, and slow-release fertilisation feeds the plants gradually for the first 4-6 weeks.
Substrates Regular
All products in the Substrates Regular range.
Mills Coco & Cork
Mills Coco & Cork is a ready-to-use blend of 75% RHP-certified coco peat and 25% fine cork. The cork provides superior aeration for root development, so no perlite is needed and no mixing or buffering is required. For indoor and outdoor use.
Mills Cocopeat
Mills Cocopeat is a pH-neutral coco substrate of coco fibres and coco gravel with a light consistency that balances moisture and aeration, encouraging strong and extensive root systems. Supplied in 50 L bags.
Mills Light Mix
Mills Light Mix is a peat-based growing mix with sphagnum and perlite for commercial applications, moderately pre-fertilised with NPK 14-16-18 fertiliser. It uses carefully selected and filtered mosses and has an EC of 1.2-1.4.
Mills Top Mix
Mills Top Mix is a pre-fertilised potting soil of black and white peat with perlite, Mills fertiliser (NPK 14-16-18) and added calcium nitrate for an explosive start. EC 1.2-1.4, for short and long cultivation. 50 L bag.
More from Mills
Other products by Mills.
Mills Basis A
Mills Basis A is part A of the two-part Mills Basis A & B mineral base nutrient. Used together in equal amounts, A and B supply all macro- and micronutrients in balanced proportions for both the vegetative and flowering phases. NPK 3-0-1.
Mills Basis B
Mills Basis B is part B of the two-part Mills Basis A & B mineral base nutrient. Used together in equal amounts, A and B supply all macro- and micronutrients in balanced proportions for both the vegetative and flowering phases. NPK 0-4-3.
Mills C4
Mills C4 is a liquid bloom stimulator that encourages early flower sets and assists carbohydrate delivery and the production of essential oils. It is a concentrated mix of sugars, vitamins, amino acids and humic acids. NPK 0.7-3-3.
Mills CalMag
Mills CalMag is a highly concentrated liquid calcium and magnesium supplement. It corrects and prevents Ca and Mg deficiencies, supports growth and vitality and stabilises EC, and is essential with soft water or reverse-osmosis water.
Spotted an error, missing data, or have a comment? Send feedback to Mills.
Message Mills
Your message is delivered to the brand team.