fertilizer combinations - Knowledgebase Question

Rosedale, MD (Zone 7A)
Question by Juzkins
March 22, 2007
What is a good combination fertilizer to use for bulb plants (daffodil, tulips, etc)? Also I need to know a good fertilizer for grass.


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Answer from NGA
March 22, 2007

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Fertilizer packages contain 3 major elements, plus some trace elements. The numbers correspond to the percentage of Nitrogen, Phosphorous and Potassium. Lawns need more nitrogen (which promotes lush, green growth), so lawn fertilizer generally contains more nitrogen than other elements. Try to use a fertilizer with roughly a 3-1-2 ratio of N-P-K. The most commonly available fertilizer is a 21-7-14 for spring and summer feeding. Bulbs do best with more phosphorus and potassium and less nitrogen because you want to promote healthy roots and leaves. In this case, use a specialized bulb food, one that is higher in potassium than nitrogen.

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