As you are out and about in the Arboretum, you will note the shrub Ninebark, Physocarpus opulifolius, along Medford Leas Way, on the edge of the berm on the Medford Campus. This native shrub is known for its white flowers in the spring, and in the winter when the leaves have dropped, the exfoliating bark is an interesting sight. Its fast growing habit makes it a favorite for many locations.
In just one year of growth, many ninebark varieties can reach their mature size. The rapid growth of these plants can be gratifying but also a deterrent for some people, since they may get a little too big in size. Luckily, ninebarks are amenable to pruning. Either prune after they bloom, or prune in late winter before growth starts if you don’t mind sacrificing their blooms.
