Region: Upper Plains
I've used Frau Dagmar in zone 3 (Canada) very successfully. It's a lovely rose with intermittent single pink blooms (slightly scented) after the first early summer flush. It also has huge crabapple size hips and orange/red foliage in the fall.
I've had no problems with diseases or insects as it is a rugosa rose. It is also fairly drought tolerant and very hardy. Highly recommended!
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