Slow-release
soil science,
hand-blended.
Multi-input fertiliser blends, made with organic ingredients. We also sell soil conditioners, biostimulants and individual fertilisers on their own — Yorkshire polyhalite, liquid gypsum, mycorrhizal fungi, Scottish seaweed, fulvic and humic acids. No slaughterhouse waste, ever.
"I like Dr Forest's general-purpose feed, which is organic, made here in the UK, and full of good stuff."
Alys Fowler · The Guardian
Named after my grandfather Dr Forrest.
Dr Forest is named for my grandfather, Dr Forrest — a GP for a mining town near Preston. Off-shift he kept a back-garden plot growing runner beans for the piccalilli he made for family and friends.
We've taken the evidence-based approach of medicine and applied it to soil — guided by peer-reviewed science, not dogma. Every batch is hand-blended here in Stockport. No slaughterhouse by-products. No mystery NPK fillers. British-sourced minerals where possible, organic plant meals and microbial biology — ingredients named on the bag, percentages published.
Shop by crop.
Slow-release tomato feed for heavier trusses and richer flavour.
Slow-release rose feed for bigger blooms and deeper colour.
Organic chilli and pepper feed for hotter, sweeter fruit.
Potassium-rich strawberry feed for sweeter, firmer berries.
Organic potato fertiliser for cleaner tubers and heavier crops.
All-round fruit and veg fertiliser for steadier growth and better harvests.
Flower fertiliser for longer flowering and stronger stems.
Balanced 6-6-6 all-purpose feed for the whole garden, season-long.
Shop by ingredient.
Yorkshire polyhalite — four minerals (K, Mg, Ca, S) in one.
Liquid gypsum for heavy clay soil — calcium and sulphur, pH-neutral.
Fulvic acid for sharper nutrient uptake and stronger root activity.
Humic acid for better soil structure and steadier nutrient release.
Mycorrhizal powder — 18 root-partner species for stronger establishment.
Scottish seaweed meal for steadier growth and natural plant hormones.
Sulphate of potash — slow-release potassium for fruit, flowers and flavour.
Alfalfa meal for slow nitrogen and natural growth from triacontanol.
Shop by stage.
Match your nutrients to the plant's requirements at each stage — whether you're growing tomatoes, fruit, veg or ornamentals — the way the professionals do, and you'll see more growth, more flowers and more yield.
High-nitrogen veg-stage feed for leaf, stem and root growth.
Early-bloom feed for flower set and strong trusses.
Mid-bloom feed for fruit set and even ripening through the canopy.
Late-bloom finisher for ripening, colour and clean harvest.
Soil-first. Organic always.
We've never used slaughterhouse by-products and never will. Every Dr Forest blend is built around British-sourced minerals, organic plant meals and live microbial biology — feeding the soil so the soil feeds the plant.
It's slower than synthetic NPK. It works for longer. And it leaves your soil in better shape every season — the way good gardens have always been made.
Trusted by 4,250+ UK growers.
I decided to try granular potash to take some of the strain from regular watering. I can’t recommend this product enough. My fruit trees and flowers are thriving with little effort from me. I’ve made some bags up for family and friends and they’re impressed with the product. A little goes a long way.
My shrubs, herbaceous plants and lawn seem generally healthier, lusher, more floriferous, and I think larger flowers. Also an efficient service.
I’ve used Dr Forest potato fertiliser on multiple varieties of normal potato and sweet potatoes. I’ve noticed the foliage has exploded, the stems are nice and thick as well. Another great product from Dr Forest.
Well packaged, showed up on time and my plants love it — both as a mulch layer and broken down into a new living soil mix. Will buy again, and maybe other things I need as well.
Good quality and slow-release no-till amendment, also very easy to use. I would definitely recommend to other growers.
I didn’t want to rely on harsh chemicals to feed my roses. I appreciate that Dr Forest Premium Rose and Flower fertiliser is both organic and sustainable, looking after the soil and the roses, slowly releasing nutrients. I’ve used this food for two seasons now and noticed how well my roses were growing — several flushes of blooms with good colour and fragrance.
Most-read guides.
In organic gardens you'll often hear that pH doesn't matter because the soil buffers it. Only partly true. pH drifts even in well-tended organic systems, slowing growth before you notice. How to test it, how to raise or lower it gently, and which UK plants want what.
Yellow leaves on a tomato plant aren't one problem. They're a symptom of half a dozen different things, and the right fix depends on which one. The position of the yellow on the plant and the pattern inside the leaf together name the cause. The diagnostic guide, plus a feeding programme that prevents most cases.