Because kelp meal, a product made from seaweed, is a natural source of potassium, it is widely used in feed for poultry, livestock and shrimp farming. Added to the soil, it becomes an organic fertilizer and soil amendment; it helps to improve the texture of the soil and aids in water retention. Kelp meal is expensive, but a little goes a long way. In fact, out of a 4-pound package, you will only need 1 ounce added to a large bag (64-quart) of potting soil.
Pour the potting soil into a large bucket.
Measure the required amount of kelp meal and pour it into the bucket with the potting soil.
Mix the soil and kelp meal well.
Water the mixture well, stirring to ensure uniform moisture.
Spread the amended potting soil on the tarp or plastic bag and allow it to dry until it is barely moist.
When the amended potting soil is dry, place it in a large plastic bag or tub for storage.