|What does 10-15-10 mean?|
|The numbers indicate the percentage of nitrogen, phosphorous and potassium in a package of fertilizer. Nitrogen promotes lush, green growth. Phosphorous promotes healthy stems and blooms, and potassium helps strengthen stems and roots. All the elements work together to provide nutrition to plants. The 10-15-10 formula is a good one for plants that bloom (such as roses).
Hope this clarifies things for you.