Fertilizer for Knockout Rose bushes - Knowledgebase Question

Jasper, GA
Question by vickiejar
July 2, 2007
Do we need to fertilize our knockout rose bushes? If so when and what type of fertilizer?

Answer from NGA
July 2, 2007



They can grow without supplemental fertilizer but they'll bloom best and have better vigor with a little supplemental feeding. Use a turf type fertilizer (3-1-2 ratio of nutrients) at a rate of 1 cup per 25 square feet of soil area (about 5' X 5' around each bush) every 6 weeks from spring to late summmer.

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