Physocarpus opulifolius Diabolo® (syn. Diablo or Monlo, P.P. No.11211, Feb. 8, 2000) Rosaceae
Diabolo or Diablo Ninebark or Eastern Ninebark fi-so-KAR-pus op-u-li-FO-li-us
- Deciduous shrub, upright, 10 × 10 ft (3 × 3 m). Leaves purplish-red during much of the growing season, but reportedly becomes dark green in areas with hot summers. White flowers and reddish fruit.
- Sun, to maximize purple color of leaves.
- Hardy to USDA Zone 2
- This selection was discovered in June 1968 in a field of 120,000 seedlings of Physocarpus
opulifolius. The discovery was based on the unique red foliage of this particular
seedling in the large field planting of typically green foliaged plants in Ellerbek, Schleswig-Holstein,
near Hamburg in Germany. This distinct selection was given the cultivar name Monlo in the patent application.
The trademark name of Monlo is Diabolo®, which is now owned by Monrovia
Nursery. However, the name often seen in nursery commerce is Diablo, usually, but
incorrectly, as the cultivar name, i.e., Diablo (note the single quotes which specify the
cultivar name). According to Monrovia's Brian Jacobs, his company inherited the name Diabolo®
from the originator of the plant, Kordes Nursery in Germany. The word diabolo is derived from the
Latin, diabolus, and Greek, diabollos, words for devil, not the Spanish diablo.