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Aquatic Compost
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Westland Aquatic Compost is specifically formulated from sterilised soil and grit to allow the healthy and successful growing of all submerged, floating and marginal aquatic plants in ponds, rock pools and water features.

  • Sterilised soil & grit for healthy aquatic plants
  • Slow release of nutrients to prevent greening of water
  • Loam based for nutrient retention

Sizes available

  • 20 litre
  • Product Details
  • How to use
  • Tips & Advice

Why Use

Westland Aquatic Compost contains a mix of sterilised soil (loam) to help retain vital nutrients for the plant and a balance of low level fertiliser to encourage plants to grow healthily without attracting unwanted Blanket Weed.

The compost also protects the purity of the water whilst added grit aids the anchorage of plants.

Ideal for

Floating pond plants, such as Water Lillies (Nymphoea), Arrowhead (Sagitarria), Frogbit (Hydrocharis morsus-ranae) and Golden Club (Orontium).

Submerged oxygenators, such as Pondweed (Lagarsyphon major) and Water Mint (Mentha acquatica).

Marginals, such as Water Iris (Iris Laevigata), Water Plantain (Alisma) and bog plants such as Marsh Marigold (Menyanthes), Bur Reed (Sparganium) and most other aquatic plants.

How to Use

Put on a pair of gloves and rework the compost between your hands, so it regains its intended appearance. Then you’re set to go!

Potting Water Plants and Marginals

Select a mesh container suitable for the size of the plant. Line the container with a netting of hessian sacking. Half fill the container with Aquatic Compost. Position the plant in the centre of the container, spreading out the roots. Fill the remainder of the container to within 1cm of its top. Firm down securely. Add a layer of grit to the top. This will prevent the compost from escaping into the water. Submerge the plant slowly, allowing the water to slowly penetrate the Aquatic Compost.

Feeding and aftercare

Aquatic plants only require feeding every year or two. The simplest way to do this is to push a slow release fertiliser tablet into the root mass during planting.

Handy Gardening Tips

  • ‌Not suitable for ericaceous (lime-hating) plants
  • ‌Store in a dry, frost-free place away from weedkiller and other garden chemicals
  • ‌Re-seal the bag after use
  • ‌Wear gloves while handling and wash hands after use

Frequently Asked Questions

Q. Some of the material has dispersed whilst placing the pot in the water. Is this normal?

A. Yes, you can minimise the amount of compost that escapes by applying a layer of horticultural grit on top of the Aquatic Compost and also wetting the compost before filling the planter/basket or container.

For any other questions or advice please contact our Technical Advice line on:  01480 443789 (Mon-Fri 9am- 5pm) or email customerservice@westlandhorticulture.com

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