Established vegetable gardens will require 2 pounds of garden fertilizer per 100 square feet each year. Do not use lawn fertilizers on vegetable plants. They may contain weed killers, which will damage the plants; furthermore, too much nitrogen can result in excessive leaf growth at the expense of fruits and roots.
Which fertilizer to use for vegetables?
Here are some disadvantages: Some organic fertilizers, such as manures and compost, are bulky and difficult to store and transport. Their slow release of nutrients, in some cases dependent on the action of soil microorganisms, may take too long to remedy a dire situation when an adequate nutrient supply is needed.