Hello Gardeners, I’m Amanda McNulty with Clemson Extension and Making It Grow . Kaolin clay is a nuisance in garden soil; unlike red clay, it’s basically inert, low in electrical charges that hold nutrients and water, and is even more gluey and sticky if you can image that. However, it has a several uses for commercial growers and home gardeners. When kaolin clay is sprayed on plants, it forms a barrier, coating the leaves and fruits with a white film which protects them from damage by certain