Premium Organic Fertilisers

Premium organic fertilisers

The complete organic range, done properly

This is the full Dr Forest organic fertiliser range in one place: finished crop-specific blends alongside the single-ingredient fertilisers and minerals we build our formulations around. Everything here follows the same principles: organic ingredients, no slaughterhouse by-products (no blood meal, bone meal, hoof and horn or feather meal) and science-based formulations. The blends are handcrafted in small batches at our Stockport workshop, and the single nutrients are the same inputs we trust in our own formulas, offered straight.

What's in the range

Crop-specific blends

Multi-input blends, each tuned to the feeding pattern of one crop across the season. Browse them together in the crop-specific fertiliser collection.

  • Premium Tomato Fertiliser: high potassium and calcium, formulated to support fruit set, flavour and resistance to blossom-end rot.
  • Premium Rose 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.
  • 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.

Single-ingredient fertilisers and minerals

Precise building blocks for correcting one nutrient at a time or building your own feeding programme.

  • Potassium and minerals: Yorkshire polyhalite with potassium, calcium, magnesium and sulphur in one granule, plus chloride-free sulphate of potash.
  • Phosphorus: soft micronised rock phosphate and a calcined high-phosphorus meal for roots, flowering and fruit set.
  • Nitrogen: plant-based nitrogen meal, alfalfa pellets and amino-chelated soluble nitrogen, plus fish meal and fish protein hydrolysate.
  • Calcium and magnesium: amino-chelated calcium, micronised magnesium and a solution-grade Cal-Mag for fast corrections.
  • Trace elements: amino-chelated micro-nutrients, fully water soluble for feeds and foliar sprays.
  • Soil biology and extras: insect frass, neem meal, soluble seaweed powder and an organic microbial lawn feed.

Why this range is different

  • Blend or building block: feed a whole crop from one bag, or correct exactly one deficiency without disturbing everything else.
  • Slow release and solution grade: granular feeds break down gently over the season with no nutrient spikes, root burn or salt build-up, while the solution-grade range covers fast, targeted corrections.
  • Feeds the soil, not just the plant: organic ingredients support the bacteria, fungi and earthworms that build long-term fertility.
  • No slaughterhouse by-products: built on plant, mineral, insect-frass and marine inputs. No blood meal, bone meal, hoof and horn or feather meal.
  • Compostable packaging on the blends: every Premium blend 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. Only after the crop blends? See crop-specific fertilisers. Prefer fully animal-free? Browse the vegan fertiliser collection.

Organic fertilisers: common questions

The crop-specific blends are vegetarian, with a small amount of insect frass as a natural source of chitin and slow-release nitrogen. A few single-ingredient feeds are marine based (fish meal and fish protein hydrolysate). Nothing in the range contains slaughterhouse by-products: no blood meal, bone meal, hoof and horn or feather meal. For fully animal-free options, see the vegan fertiliser collection.
The blends are complete feeds: one bag covers a crop's nutritional needs across the season. The single-ingredient fertilisers do one job each, so you can fix a specific deficiency or build a custom programme. If you're not sure where to start, start with a blend.
Yes, the range is 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, and so on. The All-Purpose 6-6-6 is a balanced general feed for when you want one bag that covers a whole garden.