The Full Range
71 products
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Granular
Malted Barley
250+ WK Diastatic Malt for Soil
Rated 5.0 out of 5 from 4 reviews
From £10.99 £14.65/kg4 sizes · down to £6.67/kg
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Malted Barley
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Powder
Organic Amino Acid Fertiliser
Foliar Feed
Rated 5.0 out of 5 from 4 reviews
From £6.00 £150.00/kg5 sizes · down to £43.98/kg
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Organic Amino Acid Fertiliser
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Granular
Bokashi Bran
Kitchen Waste Activator in a Compostable Bag
Rated 5.0 out of 5 from 3 reviews
From £14.50 £9.67/kg2 sizes · down to £7.78/kg
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Bokashi Bran
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Liquid
Wood Vinegar
Organic Plant Biostimulant
From £14.99 £29.98/litre2 sizes · down to £23.99/litre
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Wood Vinegar
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Powder
Micronised Volcanic Rock Dust
Rated 5.0 out of 5 from 6 reviews
From £5.99 £11.98/kg5 sizes · down to £4.33/kg
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Micronised Volcanic Rock Dust
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Liquid
Liquid Amino Acids
40% Amino, 5.78% N · Foliar Feed
Rated 5.0 out of 5 from 1 review
From £14.99 £29.98/litre2 sizes · down to £25.00/litre
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Liquid Amino Acids
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Coarse Powder
Chilli & Pepper Fertiliser
Organic 3-3.5-7
Rated 5.0 out of 5 from 2 reviews
From £11.50 £7.67/kg7 sizes · down to £3.50/kg
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Chilli & Pepper Fertiliser
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Powder
Montmorillonite Clay
Soil CEC Booster
Rated 5.0 out of 5 from 4 reviews
From £11.00 £7.33/kg4 sizes · down to £4.07/kg
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Montmorillonite Clay
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Liquid
Liquid Seedling Fertiliser
Root Starter
Rated 5.0 out of 5 from 1 review
From £12.99 £25.98/litre2 sizes · down to £20.99/litre
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Liquid Seedling Fertiliser
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Liquid
Liquid Micronutrients
7 Trace Elements
Rated 5.0 out of 5 from 2 reviews
From £15.99 £31.98/litre2 sizes · down to £22.00/litre
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Liquid Micronutrients
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Granular
Granulated Rock Dust
Volcanic Basalt · Slow-Release
Rated 5.0 out of 5 from 1 review
From £11.00 £7.33/kg4 sizes · down to £4.07/kg
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Granulated Rock Dust
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Coarse Powder
Strawberry Feed
Organic 3-2-7 High Potash
From £11.50 £7.67/kg7 sizes · down to £3.50/kg
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Strawberry Feed
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Liquid
Plant Soap
Potassium Soft Soap
Rated 4.83 out of 5 from 6 reviews
From £12.00 £24.00/litre3 sizes · down to £9.00/litre
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Plant Soap
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Coarse Powder
Potato Fertiliser
Organic 3-5-8
Rated 5.0 out of 5 from 3 reviews
From £11.50 £7.67/kg7 sizes · down to £3.50/kg
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Potato Fertiliser
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Liquid
Soil Smiths Living Feed
Microbial Foliar
Rated 5.0 out of 5 from 1 review
From £24.00 £24.00/litre2 sizes · down to £14.60/litre
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Soil Smiths Living Feed
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Granular
Lawn Fertiliser
Organic 10-3-3.5 Feed
From £12.65 £8.43/kg7 sizes · down to £3.85/kg
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Lawn Fertiliser
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Powder
PK Fertiliser 0-5-5 + Calcium
Organic
Rated 5.0 out of 5 from 4 reviews
From £13.99 £9.33/kg3 sizes · down to £6.11/kg
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PK Fertiliser 0-5-5 + Calcium
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Powder
Amino Chelated Calcium
Cal-Mino · 10% Ca
Rated 5.0 out of 5 from 2 reviews
From £7.00 £233.33/kg5 sizes · down to £125.00/kg
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Amino Chelated Calcium
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Powder
Potassium Rich Fertiliser
11% K₂O
Rated 5.0 out of 5 from 2 reviews
From £6.99 £13.98/kg4 sizes · down to £6.28/kg
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Potassium Rich Fertiliser
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Powder
Sea Shell Meal
Raises Soil pH · pH 8
Rated 4.0 out of 5 from 2 reviews
From £11.00 £7.33/kg4 sizes · down to £4.50/kg
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Sea Shell Meal
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Powder
Garden Lime
Micronised Calcium Carbonate 96%
Rated 5.0 out of 5 from 5 reviews
From £7.00 £14.00/kg3 sizes · down to £6.67/kg
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Garden Lime
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Liquid
Liquid Magnesium 21% Mg
Organic Suspension
From £12.99 £25.98/litre2 sizes · down to £19.99/litre
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Liquid Magnesium 21% Mg
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Granular
Slow Release Humic Acid
Granular Leonardite Humate
From £7.19 £28.76/kg3 sizes · down to £20.00/kg
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Slow Release Humic Acid
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Sold outLiquid
Organic Liquid Potassium
15% K2O · Dr Forest
From £13.99 £27.98/litre2 sizes · down to £21.99/litre
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The full range, in one place
Every Dr Forest fertiliser, soil conditioner, biostimulant and single mineral on one page — named ingredients, blended in Stockport. If you already know the bag you want, scroll the grid. If you do not, start with what you grow, how you feed, or the soil itself.
The full catalogue, from finished crop blends to single minerals. If you know what you are looking for, this is the fastest way to find it. If you do not, the routes below will get you there quicker than scrolling.
It covers both halves of the catalogue: the finished blends, and the raw plant nutrients the blends are built from. If you came to buy plant nutrients individually rather than a bag with everything already in it, the single minerals, the liquids and the biostimulants are all listed here too — natural plant feed and mineral inputs, sold alongside the blends rather than on a separate site.
Start with what you grow
- Tomatoes, chillies and peppers, tomato feed, the chilli and pepper blend, and a liquid feed for pots.
- Vegetables and allotment, the two bags most plots run on, the potato blend, and the single nutrients.
- Fruit trees and soft fruit — strawberry feed, potash, magnesium and planting minerals (see Organic Fertilisers and the crop pages linked above).
- Hydrangeas and ericaceous plants, sulphur, magnesium and a shrub feed for acid-lovers.
- Roses and flowers, built on calcium and potassium in balance for repeat flowering.
- Lawn care, high-nitrogen grass feed plus the supporting cast for compacted or stressed grass, and the autumn and winter lawn feeds.
- Blossom end rot, the calcium feeds that correct it and the ones that prevent it.
Or start with how you feed
- Organic fertilisers, the blends and the single ingredients behind them.
- By nutrient: nitrogen, potash and potassium, phosphorus — compared inside Organic Fertilisers.
- Bundles and kits, built from what customers buy together.
- Liquid feeds, for when a plant needs help in days rather than weeks.
- Biostimulants, which help the plant use the nutrition already there.
- Seaweed, as kelp meal, soluble powder and liquid extract.
- Humic and fulvic acid, the carbon side of soil chemistry.
- Vegan fertiliser, plant and mineral inputs only.
Or start with the soil
- Soil improvers: rock dust, clay minerals and calcium, for structure and mineral reserves.
- Clay soil, gypsum, rock dust and a wetting agent for heavy ground.
- Microbial inoculants, mycorrhizal fungi and effective microorganisms.
- EM and bokashi, for turning kitchen waste into soil food.
- Plant soaps and wetting agents, which make everything else spread and soak in properly.
Fertiliser for sale, direct from the people who blend it
Everything listed here is our own. We are the manufacturer rather than a reseller: the fertiliser for sale on this page is packed in Stockport in batches small enough that each one carries its own analysis. There is no white-labelled drum with a sticker on it, and no ingredient hiding behind the words "organic base".
Most of the organic fertiliser suppliers selling into UK gardens are distributors, which matters for two reasons. Price, because there is one margin in the chain rather than three. And traceability, because we can tell you what went into a bag and where it came from. It is also why the plant nutrients for sale here are the same materials that go into the blends, not a cheaper parallel line.
Organic nutrients UK: sizes, delivery and where else we sell
Free UK delivery on orders over £40. Most blends come in more than one size, and sizes, prices and application rates are on every product page — as a rough guide, a 1.5kg bag of a crop blend covers a season for a small greenhouse or a raised bed, while soil conditioners and single minerals come in larger packs because the quantities involved are larger. A selection of the range is also sold on Amazon UK and eBay UK, so if you would rather order through an account you already have, that is a reasonable way to do it. The full catalogue is only here.
Organic plant supplements: a note on the phrase
Some people search for organic plant supplements, and it is worth being exact about what that means on this site. Everything here is plant nutrition: fertilisers, soil conditioners, minerals, microbial inoculants and biostimulants, applied to soil or to leaves. None of it is a food supplement, none of it is intended for human or animal consumption, and nothing here is sold with a health claim attached. Seaweed, humic and fulvic materials are sold in supplement form elsewhere on the internet; ours are garden inputs, packed and labelled as garden inputs.
Not sure where to begin?
Most people start with one of three things: a crop blend for whatever they care most about growing, an All Purpose 4-4-4 for a whole garden, or a soil conditioner if the ground is the problem rather than the feeding. The guides cover the reasoning behind each, and why organic makes the case for the whole approach.
What runs through the whole range
Every ingredient named on the label. Slow release rather than soluble spikes. Packed in small batches in Stockport, with compostable packaging on the granular blends. Free UK delivery over £40.
Common questions
Where can I buy Dr Forest fertiliser?
Direct from this site, which carries the full catalogue, and a selection of the range on Amazon UK and eBay UK. Buying here is the only way to reach the whole 76-product range, including the single minerals and the larger pack sizes.
What sizes do the bags and bottles come in?
It varies by product, and every size is listed with its price on the product page. As a rough guide, a 1.5kg bag of a crop blend covers a season for a small greenhouse or a raised bed. Rates for each product are published on its own page.
Do you deliver across the UK?
Yes, and delivery is free on orders over £40.
Are these safe around children, pets and wildlife?
Yes. Organic ingredients throughout, with no synthetic chemicals and no plant protection products in anything listed on this page.
I do not know what my soil is short of. Where do I start?
With a blend rather than a single mineral. Blends are forgiving; single minerals assume you already know what is missing. If the ground itself is the problem rather than the feeding, start with a soil conditioner instead.