Pink Peace grafted on Dr. Huey prefers alkaline. It was a blackspot fest in acidic rain. I dug it up to put 4 cups of dolomitic lime in the planting hole, and it became clean. Now healthy in 2nd year in my alkaline clay. I don't spray. Taller & lankier than own-root Pink Peace, and blooms don't last long in hot sun.
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Pink Peace grafted on Dr. Huey prefers alkaline. It was a blackspot fest in acidic rain. I dug it up to put 4 cups of dolomitic lime in the planting hole, and it became clean. Now healthy in 2nd year in my alkaline clay. I don't spray. Taller & lankier than own-root Pink Peace, and blooms don't last long in hot sun.