Contents
Description
Orixa Japonica, also known as Japanese silver grass or Eulalia grass, is a perennial ornamental grass that is native to Japan, China, and Korea. It belongs to the Poaceae family and is widely cultivated for its attractive foliage and showy plumes.
Taxonomic Information
| Domain | Eukaryota |
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Liliopsida |
| Order | Poales |
| Family | Poaceae |
| Genus | Orixa |
Appearance
Orixa Japonica can grow up to 6 feet tall and 4 feet wide, with a clumping growth habit. It has narrow, arching leaves that are green with white midribs and margins. The leaves can turn yellow, orange, or red in the fall. In late summer to early fall, it produces tall, slender flower stalks that bear feathery, silver-white plumes that can reach up to 12 inches long. These plumes persist well into the winter and add interest to the landscape.
Care Guide
Orixa Japonica is easy to care for and can thrive in a variety of conditions. Here are some tips for caring for Japanese silver grass:
- Water: Water regularly during the growing season, but do not overwater. It can tolerate some drought once established.
- Fertilization: Apply a balanced fertilizer in the spring.
- Soil: It prefers well-drained soil but can tolerate a wide range of soil types.
- Sunlight: It prefers full sun but can tolerate some shade.
- Hardiness Zones: It is hardy in USDA zones 5-9.
Common Pests & Diseases
Orixa Japonica is generally pest and disease resistant, but it can be susceptible to rust and leaf spot. To prevent these diseases, avoid overhead watering and ensure good air circulation around the plant. Insect pests such as aphids, mealybugs, and scale can also infest the plant, but they can be controlled with insecticidal soap or neem oil.
Habitat
Orixa Japonica is native to Japan, China, and Korea, where it grows in open woodlands, meadows, and along streams. It is widely cultivated as an ornamental plant in gardens and landscapes around the world.
Question and Answer
Q: Can Orixa Japonica be grown in containers?
A: Yes, it can be grown in containers, but it will need to be divided and repotted every few years to prevent it from becoming root-bound.
Q: How often should I fertilize Orixa Japonica?
A: Apply a balanced fertilizer once in the spring and again in midsummer.
Q: Does Orixa Japonica spread by runners?
A: No, it does not spread by runners, but it can slowly expand by clumping.
Q: Can Orixa Japonica be used for erosion control?
A: Yes, it can be used for erosion control on slopes and hillsides due to its extensive root system.
Related Plants
- Orixa Chinensis
- Orixa Angustifolia
- Orixa Odorata
References
- “Orixa Japonica.” Missouri Botanical Garden, www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=266011. Accessed 15 Nov. 2021.
- “Eulalia Grass.” The Spruce, 18 Oct. 2021, www.thespruce.com/eulalia-grass-2132953. Accessed 15 Nov. 2021.
- “Orixa Japonica.” Plant Finder, www.plantfinder.com/plants/orixa-japonica-5294. Accessed 15 Nov. 2021.
