Rosa 'KORcoluma' (Grand Amore™ Eleganza®)

Rosa 'KORcoluma' (Grand Amore™ Eleganza®) was bred by Tim Hermann Kordes in Germany and is a cross between Rosa 'MEIronsse' (Christoph Columbus) and an unnamed Rosa seedling. It was patented on August 22, 2006 and has patent number PP17,047. It is a hybrid tea rose.

At Brookgreen Gardens, we have been impressed by how Rosa 'KORcoluma' (Grand Amore™ Eleganza®) has performed. Hybrid tea roses have a reputation for being difficult to grow due to disease pressures, especially from black spot (Diplocarpon rosae). While we have found some problems with black spot, it does not seem to cause enough problems to make the rose unattractive. The flowering is consistent and highly attractive; it is overall a strong performer and great addition to the landscape.

Black spot can cause leaves to develop black spots with blurred edges, yellowing leaves, and eventually partial or entire defoliation. While black spot is rarely fatal, it can weaken the rose by reducing its leaves and therefore its ability to photosynthesize. Although similar in appearance to cercospora leaf spot, black spot can be distinguished by the less defined and more feathered edges of the spots. As with many fungal problems, issues are generally worse in areas with high humidity. Black spot can be treated chemically.