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Roses, Clematis and Peonies
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Plant Types:Roses 
Description:[From Modern Garden Roses, by Peter Harkness, p. 138:] The Association of German Nurserymen organizes a competition to select roses likely to withstand different climatic conditions within the country. Each chosen rose is labeled 'Anerkannte Deutcher Rose' (ADR) and can be expected to enjoy a long commercial run.

[From Peter Schneider on Roses, by Peter Schneider, p. 11:] Winners of Germany's ADR award can be counted on for winter hardiness and disease resistance.

Their website is:  

(Default) Country:Germany
(Default) Show:ADR General German Rose Novelty Trials 
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