lawn fertilizer - Knowledgebase Question

Name: Carol Hugiud
Question by cnag13
March 29, 2010
Have leftover #4 lawn fertilizer from last fall. Is it ok to use now in spring? Will it control the crabgrass or need to buy new spring #1? Can #4 save til this fall? Lawn in Connecticut.

Answer from NGA
March 29, 2010


As long as the fertilizer has been kept dry, it will be safe to use this fall. It's a winterizer fertilizer which has a slightly different NPK ratio than a spring fertilizer. I'd recommend using a fertilizer formulated for spring, one with Halts or other crabgrass pre-emergent herbicide included. Get it on the lawn soon - crabgrass seeds germinate in the early spring and the pre emergent needs to be put down before that happens. Good luck with your lawn.

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