<human>:  How do I know if my soil has enough nitrogen and potassium?
<bot>: To check if your soil has enough nitrogen and potassium, you can perform a soil test. A soil test will evaluate the nutrient levels in the soil and enable you to determine if you need to add more nitrogen and potassium. Additionally, you can look for signs of nitrogen and potassium deficiency, such as yellow or stunted leaves, in your plants.