Potassium is an essential mineral for plant growth. It is needed in the formation of chlorophyll, and it also helps regulate water and sugar levels in plants.
Potassium is also involved in the production of chlorophyll, and is used to make cell walls and connective tissue. Plants require potassium to help them absorb nutrients from the soil.  The amount of potassium you need to feed your plants depends on several factors. These include:
The type of plant you're feeding. Plants that are grown in soil tend to require more potassium than those that grow in water. Some types of plants, such as tomatoes, require only a small amount of potassium to grow. Other plants, such as cacti, will need a lot of potassium. The time of year when you feed the plant. When you feed a plant in the spring, it will absorb more potassium than it will when you feed it during the summer.