Brunnings Garden Compost with Added Seaweed is ideal for improving soil and enhancing its ability to hold nutrients and water. Seaweed contains a broad range of nutrients, trace elements, alginic acids and other bioactive compounds that stimulate the microbial fungi in the soil and help promote healthy root structure. It breaks down to add humus to the soil helping to make it more fertile. It is a gentle source of nutrients and can be used as a mulch to prevent weed growth and retain moisture.