liquid seaweed fertiliser comparison - September 2026

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Last updated on 06.09.2026

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Maxicrop Seaweed Plant Growth Stimulant 2.5L for Strong Roots & Growth

Maxicrop

25% off

free shipping

To the product (6 offers)

9,9

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envii SeaFeed Xtra – Organic Liquid Seaweed Fertiliser, Outdoor Plant Food Ideal for all Plants, Lawns, Gardens and House Plants, Rich in Additional Nutrients - 5 Litre

envii

free shipping

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9,8

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MULTI-MITE 100% Natural Liquid Seaweed Fertiliser 10 Litre Plant Feed Concentrate Biostimulant for Gardens Lawns Vegetables Trees Roses Shrubs Herbs Fruit and House Plants Natural Liquid Seaweed

Multi-Mite

free shipping

To the product (4 offers)

9,8

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2 X Doff 1L Liquid Seaweed Concentrated Multi-Purpose Feed

Doff

free shipping

To the product (1 offer)

9,6

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ALGA-SOL Cold Press Concentrate Seaweed Extract Ascophyllum Seaweed Extract 5Ltr Biostimulant Fertiliser Fertilizer Seaweed Plant Feed Organic Fertiliser Fertilizer

Mifica

free shipping

To the product (1 offer)

9,5

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Vitax Organic Liquid Seaweed, Concentrated, Bigger Crops, Healthier Plants, Suitable For Plants, Flowers and Fruit & Vegetables- 1 Litres

Vitax Ltd

free shipping

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9,5

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Westland Safelawn Liquid 1L, Green

Westland

13% off

free shipping

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9,4

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The Shropshire Seaweed Co. Cold-Pressed Liquid Seaweed Fertilizer - Certified Organic Plant Food & Lawn Feed - Rich in Natural Nutrients for Growth, Roots & Soil Health - Sustainably Sourced, 5L

Shropshire Seaweed

free shipping

To the product (1 offer)

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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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

free shipping

To the product (2 offers)

9,3

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Plantworks Ltd Empathy 1l All-Purpose Liquid Seaweed Stimulant

Organic seaweed stimulant suitable for use with all plants

£ 9.00

To the product (5 offers)

30% off

Seaweed Concentrate 200ml | Organic Ascophyllum Nodosum Seaweed Extract Plant Food | Liquid Fertiliser & Foliar Feed for Indoor & Outdoor Plants | Boosts Roots, Growth, Resilience | Makes Up to 20L UK

READY STEADY DEFEND

£ 6.99 free shipping

To the product (1 offer)

Seaweed Garden Plants Food Fertilizer - Pack of 2 x 1L Organic Seaweed Liquid Plant Feed Growth Stimulant with Topline Card. Garden Fertilisers for Vegetable Plants, Fruits or Flowers.

Topline

£ 16.99 free shipping

To the product (1 offer)

Liquid Seaweed Fertiliser 5L – Organic Plant Food for All Plants, Lawns & Vegetables – Boosts Growth, Stronger Roots & Healthier Plants – Highly Concentrated (Makes Up To 1,000L)

Sunshine Renewables UK

£ 25.99 free shipping

To the product (1 offer)

Palm Focus Fertiliser Concentrate for All Palms, 1 Litre, Makes 200L

Growth Technology Ltd

£ 8.99 free shipping

To the product (6 offers)

Bronte Ericaceous Plant Food - 1L Bottle of Concentrated Organic, Seaweed-Enriched Azalea, Camellia & Rhododendron Fertiliser. Pet-Friendly, UK Made, Boosts Flowering & Growth in Acid-Loving Plants

Bronte Heritage Collection

£ 10.99 free shipping

To the product (1 offer)

5% off

Liquid Seaweed Concentrated for Pest Free Environment Organic & Natural Growth Stimulants for Plant Food Shrubs Vegetables 1 Liter

ZOPPER

£ 9.97 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)

HouseProud Organic Seaweed Fertiliser, Plant Food & Lawn Feed 1L Makes 500L | Stronger roots, bigger yields, greener growth — natural seaweed biostimulant that boosts rooting, flowering and fruiting

HouseProud

£ 12.99 free shipping

To the product (1 offer)

Elixir Gardens Organic Hebridean Liquid Seaweed Fertiliser 5L Bottle | Multi-Purpose Plant Feed Concentrate & Stimulant Lawn & Turf Care/Green-Up Soil Enrichment and Root Booster 5L Bottle

Elixir Gardens

£ 24.25 free shipping

To the product (1 offer)

Plantworks Ltd EMPATHY ERICACEOU SEAWEED 1L

EMPATHY ERICACEOU SEAWEED 1L

£ 9.00

To the product (6 offers)

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)

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