KELP or "seaweed" is form of algae marine plant that grows on rocks in the ocean. Kelp is a source of Algin, a thickening agent used in toothpaste, paint, ice cream and cosmetics. The best times to apply Kelp are early morning and early evening, when the liquids will be absorbed most quickly. Seashells are rich in calcium. Fertilizer manufacturers use seashells as a growth stimulator to help plants become more resistant to fungi. Crushed seashells can be used as soil amendment to loosen clay soil and improve drainage. Calcium carbonate in seashells provides a slow release of calcium that de-acidifies and helps balance soil pH.
