root vegetable fertiliser comparison - September 2026

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Last updated on 04.09.2026

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envii SeaFeed Xtra – Organic Seaweed Fertiliser, Liquid Outdoor Plant Food Ideal for all Plants, Lawns, Gardens and House Plants, Rich in Additional Nutrients - 1 Litre Makes up to 500L

envii

free shipping

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9,9

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MARPHYL All-Purpose Plant Food – Organic Nutrient-Rich Fertilizer & Soil Enhancer for Indoor & Outdoor Flowers, Vegetables, Succulents, Bamboo & Hydroponics

MARPHYL

free shipping

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9,8

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DYNOMYCO Mycorrhizal Fungi Inoculant, 100g/3.5oz | Boosts Root Growth, yields & nutrient uptake with 900 propagules/g granules, OMRI compliant, Seed Starter Soil Mix compatible

DYNOMYCO

free shipping

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9,8

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Elixir Gardens Triple Super Phosphate 0-46-0 Ripening Fertiliser 4kg Bag | Fruit, Root, Vegetable & Flower Feed Covers up-to 266m²

Elixir Gardens

free shipping

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9,4

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Maxicrop Organic Vegetable Feed 1L Seaweed Fertiliser for Healthy Harvests

Maxicrop

21% off

free shipping

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9,4

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10L Premium Liquid Seaweed Fertiliser (1:200 Concentrate) – Organic Plant Feed for Stronger Roots, Greener Leaves & Healthier Growth – Lawn, Vegetables & Flowers - Dilutes up to 2,000L.

Generic

3% off

free shipping

To the product (1 offer)

9,4

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Organic Potato and Vegetable Fertiliser Slow Release Plant Feed Made with Natural Ingredients for Potatoes Root Crops and Garden Vegetables Supporting Strong Growth and Improved Yields, 1kg

XEEMYX

free shipping

To the product (1 offer)

9,4

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Vitax Organic Potato And Vegetable Fertiliser, Specialist Nutritional Mix, For Bigger Crops Of Home Grown Potatoes & Vegetables Slow Release- 4.5Kg

Vitax Ltd

free shipping

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9,4

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Bargainstore Organic Potato Feed Plant Fertiliser Vegetable Root Onion Food Vitax 1kg Natural General

Bargainstore

free shipping

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9,3

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Natural Plant Feed Bonemeal Fertiliser - 8kg Bone Meal Plant Food & Root Builder Garden Fertiliser with Topline Card for Outdoor Garden Plants, Vegetable Roots, Hedges, Trees, Flowers

Topline

free shipping

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9,3

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12% off

Dunnet Tools 5L Tomato Feed For Plants Vegetable Fertiliser Organic Tomato Plant Food Liquid Concentrate 300:1 Vegetable Plant Food Outdoor High Yield Growing Fertiliser Nutrient Rich

Dunnet Tools

£ 14.99 free shipping

To the product (1 offer)

30% off

Vitax Organic Liquid Seaweed Fertilizer – All-Natural Concentrated Plant Nutrient for Flowers, Vegetables, Shrubs & Trees – Boosts Growth, Resilience & Yields (1 Litre)

TOP SAVER

£ 9.99 free shipping

To the product (1 offer)

Organic Seaweed Fertiliser, Nutrient-Rich Plant Feed, Liquid Seaweed for Plants, Lawns & Vegetables UK-Made (1L)

Oceanic Organic Ltd

£ 14.99 free shipping

To the product (1 offer)

8% off

Renaissance Organic Plant Food – 3.62 kg Bag – All Purpose Fertilizer for Outdoor & Indoor Gardens – Slow Release Natural Soil Fertiliser for House Plants, Vegetables, Fruit Trees, Roses and Grass

Renaissance

£ 11.99 free shipping

To the product (4 offers)

The Shropshire Seaweed Co. Cold-Pressed Organic Seaweed Fertiliser Concentrate — Thick, Nutrient-Dense Ascophyllum Nodosum Plant Food, Lawn & Root Feed, Certified Organic, 20L

Shropshire Seaweed

£ 94.50 free shipping

To the product (1 offer)

Vitax Organic Potato and Vegetable Fertiliser 1kg - 4.5kg, Natural Plant-Based Feed for Root Crops & Vegetables – Promotes Strong Growth, Higher Yields & Soil Health (1kg)

MURIEL BARGAINS

£ 9.49 free shipping

To the product (2 offers)

Pro-Kleen Organic Liquid Seaweed Fertiliser 5L - Ascophyllum Seaweed Extract for Grass, Vegetables, Fruit, Flowers, Shrubs, Lawns & Trees - Concentrated Formula - Provides up to 500 Treatments

Pro-Kleen

£ 27.95 free shipping

To the product (2 offers)

Plant Root Growth Enhancer 1kg – Mycorrhizal Fungi – Boosts Root System – Enriches Soil Health Resilience & Yield – Ideal For Roots of Trees, Flowers, Fruit, Vegetables & Grass Lawns - Seedzbox

Seedzbox

£ 29.99 free shipping

To the product (1 offer)

Worm Castings Pure Natural Multipurpose Fertilizer for Indoor and Outdoor Plants Vermicompost TopSoil Builder Improver Plant & Root Growth Feed Fertiliser for Potting Germination NPK Nutrient

Baltic Worm

£ 12.95 free shipping

To the product (1 offer)

DOFFITAX

£ 15.99 free shipping

To the product (2 offers)

Potato Fertiliser 3kg Tub - NPK 14-10-18 with Magnesium & Sulphur - Crop Feed for Seed Potatoes, Root Vegetables & Healthy Growth

Made to grow your seed potatoes strong and healthy

£ 24.99 free shipping

To the product (1 offer)

6% off

YouGarden Organic Potato Fertiliser - 1kg Pack, Slow Release, Suitable for Potatoes & Root Veg

YouGarden

£ 14.99 free shipping

To the product (1 offer)

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