Rosa roxburghii

Rosa roxburghii is also known as the Chinquapin Rose and Burr Rose.

At Brookgreen Gardens, we have been continually impressed by how Rosa roxburghii has performed. We have found this rose to show very little signs or problems with black spot (Diplocarpon rosae) or other fungal problems. The flower is highly attractive, the shrub is generally full with leaves, and 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. 

At Brookgreen Gardens, roses are rarely sprayed for fungal, insect, or other environmental pressures or problems. The Poetry Garden at Brookgreen Gardens is maintained as a completely spray-free rose garden, favoring the use of disease resistant roses and proper cultural practices.