Dortmund

Cherry-red, white center, yellow stamens.  None to mild fragrance.  Average diameter 4.5″.  Very large, single (4-8 petals), cluster-flowered, in large clusters, flat bloom form.  Occasional repeat later in the season.  Long, pointed buds.

Armed with thorns / prickles, climbing.  Glossy, dark green, holly-like foliage.
Height of 8′ 2″ to 12′ (250 to 365 cm).  Width of up to 6′ (up to 185 cm).