How to use seaweed-enriched compost for best results

Here’s how you can effectively use seaweed enriched compost in your garden/allotment etc…

How to use seaweed compost

Using seaweed enriched compost products in gardening can significantly enhance soil health and plant growth due to its rich nutrient content and other beneficial properties. Here’s how you can effectively use seaweed enriched compost in your garden:


Soil Amendment

Incorporating seaweed enriched compost into your garden soil improves its structure, nutrient content, and water retention capacity.



Preparation: Before planting, mix compost into the top 6-8 inches of soil. Aim for a ratio of about 25-30% seaweed compost to 70-75% native soil.

Improving Soil Texture: the compost helps sandy soils retain moisture and nutrients while improving drainage in clay soils.



Using seaweed enriched compost as mulch helps retain soil moisture, suppress weeds, and gradually adds nutrients to the soil as it decomposes.



Application: Spread a 2-3 inch layer of the compost around the base of plants, keeping it a few inches away from stems and trunks to prevent rot.

Maintenance: Reapply as needed, especially after heavy rains or as the compost breaks down over time.


Plant Fertiliser

Seaweed enriched compost can be used as a natural fertiliser, providing a slow-release source of nutrients that promotes healthy plant growth.



Top Dressing: Apply a thin layer of the compost around the base of plants during the growing season. This can be done a few times a year to provide ongoing nutrient support.


Seed Starting Mix

Seaweed enriched compost is an excellent component for seed starting mixes, providing young plants with essential nutrients right from the start.



Mixing: Combine the compost with other seed starting mediums such as perlite and vermiculite in equal parts to create a balanced mix.

Planting: Fill seed trays or pots with the mix, plant seeds according to the instructions, and water gently.


Lawn Care

Using seaweed compost on lawns can improve soil health and promote lush, green grass.



Top Dressing: Spread a thin layer of seaweed compost over the lawn, raking it lightly to ensure even distribution. This is best done in the spring or autumn.

Overseeding: When overseeding, mix grass seed with seaweed compost to enhance seed germination and growth.



Garden Organic: Provides information on the benefits and uses of seaweed compost in various gardening applications.

The Royal Horticultural Society (RHS): Offers guidelines on how to incorporate seaweed compost into gardening practices for improved plant health and soil quality.

Permaculture Research Institute: Discusses the broader applications of seaweed in sustainable gardening and farming, including composting and soil enhancement.


Buy our organic peat-free seaweed-enriched compost in 100% compostable packaging today (includes free delivery to UK mainland postcodes).

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