How can I effectively use potassium to improve the health and growth of plants in my garden?

To effectively use potassium to improve plant health and growth in your garden, you can apply potassium-rich fertilizers or organic sources like banana peels or wood ash. Potassium helps plants with overall growth, root development, disease resistance, and fruit production. It's important to follow recommended application rates and avoid over-fertilizing to prevent nutrient imbalances.