The Full Range

Every Dr Forest product on one page: the finished crop blends, the single-ingredient fertilisers and minerals they are built from, the liquid feeds, and the soil conditioners and biostimulants that support them. All of it is made by us in Stockport, with every ingredient named on the bag.

If you know the bag you want, scroll the grid. If you do not, the quickest route is to start with what you grow — tomatoes, roses, lawn, the veg plot — or with the soil problem you are trying to fix; the guide further down the page walks through both. For most mixed gardens, All Purpose 4-4-4 is the sensible first bag.

71 products

Not sure which one? Four questions, one recommendation. Find my fertiliser →
  • Granular

    Malted Barley

    250+ WK Diastatic Malt for Soil

    Rated 5.0 out of 5 from 4 reviews

    From £10.99 £14.65/kg

    4 sizes · down to £6.67/kg

    Quick add

    Malted Barley

    Full details →
  • Powder

    Organic Amino Acid Fertiliser

    Foliar Feed

    Rated 5.0 out of 5 from 4 reviews

    From £6.00 £150.00/kg

    5 sizes · down to £43.98/kg

    Quick add

    Organic Amino Acid Fertiliser

    Full details →
  • Granular

    Bokashi Bran

    Kitchen Waste Activator in a Compostable Bag

    Rated 5.0 out of 5 from 3 reviews

    From £14.50 £9.67/kg

    2 sizes · down to £7.78/kg

    Quick add

    Bokashi Bran

    Full details →
  • Liquid

    Wood Vinegar

    Organic Plant Biostimulant

    From £14.99 £29.98/litre

    2 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/kg

    5 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/litre

    2 sizes · down to £25.00/litre

    Quick add

    Liquid Amino Acids

    Full details →
  • Coarse Powder

    Chilli & Pepper Fertiliser

    Organic 3-3.5-7

    Rated 5.0 out of 5 from 2 reviews

    From £11.50 £7.67/kg

    7 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/kg

    4 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/litre

    2 sizes · down to £20.99/litre

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    Liquid Seedling Fertiliser

    Full details →
  • Liquid

    Liquid Micronutrients

    7 Trace Elements

    Rated 5.0 out of 5 from 2 reviews

    From £15.99 £31.98/litre

    2 sizes · down to £22.00/litre

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    Liquid Micronutrients

    Full details →
  • Granular

    Granulated Rock Dust

    Volcanic Basalt · Slow-Release

    Rated 5.0 out of 5 from 1 review

    From £11.00 £7.33/kg

    4 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/kg

    7 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/litre

    3 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/kg

    7 sizes · down to £3.50/kg

    Quick add

    Potato Fertiliser

    Full details →
  • Liquid

    Soil Smiths Living Feed

    Microbial Foliar

    Rated 5.0 out of 5 from 1 review

    From £24.00 £24.00/litre

    2 sizes · down to £14.60/litre

    Quick add

    Soil Smiths Living Feed

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  • Granular

    Lawn Fertiliser

    Organic 10-3-3.5 Feed

    From £12.65 £8.43/kg

    7 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/kg

    3 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/kg

    5 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/kg

    4 sizes · down to £6.28/kg

    Quick add

    Potassium Rich Fertiliser

    Full details →
  • Powder

    Sea Shell Meal

    Raises Soil pH · pH 8

    Rated 4.0 out of 5 from 2 reviews

    From £11.00 £7.33/kg

    4 sizes · down to £4.50/kg

    Quick add

    Sea Shell Meal

    Full details →
  • Powder

    Garden Lime

    Micronised Calcium Carbonate 96%

    Rated 5.0 out of 5 from 5 reviews

    From £7.00 £14.00/kg

    3 sizes · down to £6.67/kg

    Quick add

    Garden Lime

    Full details →
  • Liquid

    Liquid Magnesium 21% Mg

    Organic Suspension

    From £12.99 £25.98/litre

    2 sizes · down to £19.99/litre

    Quick add

    Liquid Magnesium 21% Mg

    Full details →
  • Granular

    Slow Release Humic Acid

    Granular Leonardite Humate

    From £7.19 £28.76/kg

    3 sizes · down to £20.00/kg

    Quick add

    Slow Release Humic Acid

    Full details →
  • Sold outLiquid

    Organic Liquid Potassium

    15% K2O · Dr Forest

    From £13.99 £27.98/litre

    2 sizes · down to £21.99/litre

    View product

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

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.