Seaweed is natural garden manure that the plants in your garden will love. Besides, you will get all the nutrients trace elements in it which you wouldn’t find in manure. Thus, to use seaweed as the garden fertiliser, you need first to collect it. So, you can collect it from the nearby waterways or local beaches. Next, you need to wash it properly to remove the sand and beach debris. Now, after washing, you need to decide for what purpose you need to use seaweed. You can make it in liquid fertiliser can add it with compost or raw state in soil. So, if you are using it in compost, then be sure to mix it with other materials well. And if you make it in liquid form, then put all the compost in a barrel or other container.