Granular Fertilizer vs. Liquid Fertilizer

  • Granular fertilizer comes in three types: plain, which is the most commonly used; pelleted or coated, which is uniform and more expensive; and slow-release, which is coated with one of several substances that cause the nutrients to be released over a period of time, usually from three to nine months. Liquid fertilizers are water-soluble and usually come in a form which needs to be diluted with water. The time-release granules are the ones compared below to the liquid fertilizers.