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Description
Physocarpus Amurensis, also known as Amur ninebark, is a deciduous shrub that is native to eastern Asia. It belongs to the Rosaceae family and can grow up to 10 feet tall and wide. The foliage is dark green and the flowers, which bloom in late spring to early summer, are small and white. The fruit produced by the shrub is a small capsule that turns brown when ripe.
Taxonomic Information
| Domain | Eukarya |
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Rosales |
| Family | Rosaceae |
| Genus | Physocarpus |
Appearance
Physocarpus Amurensis has a multi-stemmed growth habit and can form a dense thicket. The bark is reddish-brown and peels off in thin strips. The leaves are oval-shaped with toothed edges and can grow up to 3 inches long. In the fall, the foliage turns a yellow-orange color. The flowers, which bloom in clusters, are small and white with five petals. The fruit is a small capsule that contains several seeds.
Care Guide
Physocarpus Amurensis is a low-maintenance shrub that is easy to care for. It prefers moist, well-drained soil and full sun to partial shade. Water the shrub deeply once a week during the growing season and reduce watering during the winter. Fertilize the shrub in the spring with a slow-release fertilizer. Physocarpus Amurensis is hardy in USDA zones 2-7.
Common Pests & Diseases
Physocarpus Amurensis is generally resistant to pests and diseases. However, it can be susceptible to powdery mildew, leaf spot, and canker. To prevent these diseases, avoid overhead watering and provide good air circulation around the shrub.
Habitat
Physocarpus Amurensis is native to eastern Asia and can be found growing in forests and along riverbanks. It prefers moist soils and can tolerate both sun and shade.
Question and Answer
Q: How tall can Physocarpus Amurensis grow?
A: Physocarpus Amurensis can grow up to 10 feet tall and wide.
Q: What is the bloom time for Physocarpus Amurensis?
A: Physocarpus Amurensis blooms in late spring to early summer.
Q: What is the fruit produced by Physocarpus Amurensis?
A: The fruit produced by Physocarpus Amurensis is a small capsule that turns brown when ripe.
Q: What is the hardiness zone for Physocarpus Amurensis?
A: Physocarpus Amurensis is hardy in USDA zones 2-7.
Related Plants
- Physocarpus opulifolius (common ninebark)
- Physocarpus capitatus (Pacific ninebark)
- Physocarpus intermedius (grey ninebark)
References
- Dirr, M. A. (2009). Dirr’s Encyclopedia of Trees and Shrubs. Timber Press.
- Missouri Botanical Garden. (2021). Physocarpus amurensis. Retrieved from https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=279867&isprofile=0&pt=7
- University of Connecticut Plant Database. (2021). Physocarpus amurensis. Retrieved from https://hort.uconn.edu/plants/detail.php?pid=316
