
roseman
Answered on June 13, 2015
Feeding the rosebushes with a fertilizer with too high an nitrogen content can cause this. I recommend feeding the roses with a good even NPK ratio organic rose food and water them well. Feeding monthly should not be necessary. Here are some links to articles that should be helpful to you: https://www.gardeningknowhow.com/ornamental/flowers/roses/rose-fertilizer.htm
https://www.gardeningknowhow.com/ornamental/flowers/roses/best-rose-fertilizer.htm
https://www.gardeningknowhow.com/ornamental/flowers/roses/rose-deadheading.htm
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