Elixir Garden Supplies

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Seaweed Fertiliser | Seaweed Meal, Calcified Seaweed, Liquid Seaweed + Iron


  • Our seaweed products are 100% natural.
  • Seaweed meal: perfect for making your grass and plants more stress resistant.
  • Liquid seaweed: ideal for feeding larger gardens when they need a boost of minerals and nutrients.
  • Iron infused liquid seaweed: helps prevent moss & formation of worm casts.
  • Calcified seaweed: ideal for increasing soil alkalinity or give a boost to plants during spring.

Product Description


Seaweed Fertilisers

Our natural, organic seaweed fertilisers contain extracts of mineral-rich seaweed and improve overall plant health. They contain beneficial nutrients including magnesium, potassium, nitrogen and more. Seaweed has an ideal nitrogen and phosphate content and with lower phosphate levels than chemical fertilisers.

To select which fertiliser is right for you, read the uses and benefits of each product below.

Seaweed Meal

Made from Ascophyllum Nodosum concentrated from the Northern Atlantic, seaweed meal is a 100% natural and organic plant feed and conditioner. Suitable for use on lawns, gardens, sports greens as well as large agricultural land. It helps promote stress resistant, healthy sward and improves the fertility of the soil it is applied to.

Seaweed meal contains carbohydrates, amino acids, proteins, vitamins and micronutrients. Soil aeration and structure can also be improved with usage of seaweed meal, especially in clay-based soils. With its moisture retention properties it helps keep soil hydrated for longer.

Application Rate

Top dressing: 35g – 75g/sqm

Organic Hebridean Liquid Seaweed & Liquid Seaweed + Iron

Our liquid seaweed stimulates healthy plants, producing higher yields of crops and more flowers. Harvested sustainably from the isles of the Outer Hebrides using heat extraction and fermentation ensures a nutrient rich fertiliser, completely free from any additives and chemicals. It will provide your lawn and plants with essential nutrients and minerals they need for strong and healthy growth. Another benefit of the seaweed is that it improves natural plant vigour and the ability to withstand environmental stress.

Liquid seaweed with added iron will help make your lawn a beautiful dark green colour. Additionally, Liquid seaweed will harden sward and reduce the soil’s susceptibility to disease and frost damage. The iron present in the liquid will also discourage moss formation and worm activity.

Application Rate

Germinating: 5 ml/4.5 litres

Propagating/transplanting/foliage spraying mix: 10ml/4.5litres

Growing on: 20 ml/4.5 litres

Feed 1 – 2 times per week

Calcified Seaweed

A 100% natural fertiliser, made from naturally occurring beds of calcified and coralline algae. Over time it increases soil pH and improve soil structure. Containing trace elements and vital plant nutrients makes it useful as a spring lawn dressing.

Calcified seaweed can be used as an alternative to garden lime. It’s ideal for preparing an area for planting of lime-loving plants, or reducing acidity in the soil. It provides nutrients and minerals that all plants need to thrive.

Application rates

Seedbed or dug-in: 35g – 75g/sqm

Top dressing: 50g – 100g/sqm

Please note: Product may come supplied with a plain black and white label, with all relevant information applied.

Not what you’re looking for? We have a vast range of fertilisers to suit different needs. View our full range here.


Additional information

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