Premium Fertilisers

Dr Forest's Premium range is a collection of crop-specific organic fertiliser blends, each formulated for one job — to feed a specific crop, brilliantly. Every blend is handcrafted in small batches at our Stockport workshop using organic ingredients, with no slaughterhouse by-products — no blood meal, bone meal, hoof and horn or feather meal. The range is vegetarian, with insect frass used in small amounts as a natural source of chitin and slow-release nitrogen. Multi-input formulations deliver complete nutrition in a single bag — N, P, K plus calcium, magnesium, sulphur and a full set of trace elements — so you don't need to stack multiple amendments.

What's in the range

  • Premium Tomato Fertiliser — high potassium and calcium, formulated to support fruit set, flavour and resistance to blossom-end rot.
  • Premium Rose & Flower Fertiliser — built for repeat flowering, deep colour and strong fragrance.
  • Premium Flower Fertiliser 3-3-6 — high-potassium slow-release blend for bigger blooms, deeper colour and a longer display from annuals, perennials and ornamentals.
  • Premium Chilli & Pepper Fertiliser — supports the full flavour, aroma and heat profile, not just yield.
  • Premium Potato Fertiliser — slow-release feeding for higher yields and richer flavour.
  • Premium Strawberry Fertiliser — high potash to push brix and aroma in the fruit.
  • Premium Fruit & Vegetable Fertiliser — a balanced multi-crop blend for allotments and mixed beds, suitable for the entire growing season.
  • All-Purpose Fertiliser 6-6-6 — a balanced general-purpose feed for vegetables, flowers, shrubs and trees when you want one bag that works everywhere.

Why these blends are different

  • Crop-specific formulations — we don't sell one blend for everything. Each crop has its own formula tuned to real-world feeding needs across the season.
  • Slow-release feeding — nutrients break down gently over the season, so there are no nutrient spikes, no root burn and no salt build-up.
  • Feeds the soil, not just the plant — organic ingredients support the bacteria, fungi and earthworms that build long-term fertility.
  • Vegetarian, no slaughterhouse by-products — built on plant, mineral and insect-frass inputs only. No blood, bone, hoof, horn or feather meal.
  • Compostable packaging — every bag in this range is supplied in compostable paper packaging.
  • Safe around children, pets, bees, birds and wildlife — no synthetic chemicals.

Where to use

Suitable for pots, grow bags, raised beds, allotments, no-dig gardens and living soil setups. Application rates and frequencies are on each product page.

Working out how much to buy? Try the fertiliser calculator. Growing tomatoes? See our tomato troubleshooting guide.

FAQ — Premium Fertilisers

Vegetarian, not vegan. Every blend contains a small amount of insect frass as a natural source of chitin and slow-release nitrogen. There are no slaughterhouse by-products of any kind — no blood meal, bone meal, hoof and horn or feather meal — which sets us apart from most mainstream UK fertilisers.
Yes, all blends are suitable for pots, grow bags, raised beds, allotments and open ground.
Yes. Made with organic ingredients, with no synthetic chemicals, plant protection products or harmful additives.
Rose & Flower is built around fragrance, repeat flowering and deep colour, with a balanced profile suited to roses and mixed flower beds. Premium Flower 3-3-6 is a higher-potassium blend designed to drive bigger blooms and longer display — use it when you want maximum flower output from annuals, perennials and ornamentals.
The crop-specific blends are tuned for the feeding pattern of one plant family — high potassium for tomatoes, high potash for strawberries, etc. The All-Purpose 6-6-6 is a balanced general feed for when you want one bag that covers a whole garden.