In fact, the first few years you may not notice dramatic results. After the amendments have a chance to break down you should see the soil become darker, easier to work with, and require less watering. Manure even has small amounts of plant nutrients. Adding Fertilizer A garden should get regular doses of fertilizer to keep producing. That's because plants, rain and wind remove a lot of nutrients over time.
Fertilizers come in both inorganic and organic forms.
Phosphorous is crucial for flowering and fruiting plants. Potassium promotes the development of healthy roots and stems. Check the labels of fertilizers for the numbers indicating the ratio of nutrients. So every 10 pounds of it puts a pound of each element in the soil. Use a fertilizer with the right combination of nutrients to supplement the specific deficiencies of your soil.