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Description
Oenothera Californica, also known as California evening primrose, is a flowering plant native to California, Arizona, and Baja California. It belongs to the Onagraceae family, which includes more than 650 species of flowering plants. Oenothera Californica is a hardy, drought-tolerant perennial that produces vibrant yellow flowers throughout the summer months.
Taxonomic Information
| Domain | Eukarya |
|---|---|
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Myrtales |
| Family | Onagraceae |
| Genus | Oenothera |
Appearance
Oenothera Californica has a clumping growth habit and can reach a height of up to 2 feet. Its leaves are narrow and lance-shaped, with a slightly hairy texture. The plant produces bright yellow flowers that are 1-2 inches in diameter, with four petals and a central stigma. The flowers bloom in the evening and remain open until the following morning. The plant also produces small, cylindrical seed pods that split open when ripe, releasing the seeds inside.
Care Guide
Water: Oenothera Californica prefers well-draining soil and doesn’t require much water once established. Water deeply once a week during the growing season and reduce watering in the winter months.Fertilization: Fertilize Oenothera Californica once a year in the spring with a balanced fertilizer.Soil: Oenothera Californica prefers well-draining soil with a slightly acidic pH. Amend heavy clay soils with compost or sand to improve drainage.Sunlight: Oenothera Californica prefers full sun but can tolerate partial shade.Hardiness Zones: Oenothera Californica is hardy in USDA zones 8-10.
Common Pests & Diseases
Oenothera Californica is generally pest and disease-free, but it can be affected by powdery mildew and rust if grown in overly humid conditions. Aphids and spider mites may also infest the plant.
Habitat
Oenothera Californica is native to dry, rocky slopes and open areas in California, Arizona, and Baja California. It thrives in hot, dry conditions and can tolerate poor soil.
Question and Answer
Q: Can I grow Oenothera Californica in a container?
A: Yes, Oenothera Californica can be grown in a container as long as it has well-draining soil and receives enough sunlight.Q: When should I prune Oenothera Californica?
A: You can prune Oenothera Californica in the fall after it has finished blooming.Q: How often should I fertilize Oenothera Californica?
A: Fertilize Oenothera Californica once a year in the spring with a balanced fertilizer.Q: Can Oenothera Californica be propagated from cuttings?
A: Yes, Oenothera Californica can be propagated from stem cuttings taken in the spring or summer.
Related Plants
– Oenothera elata- Oenothera fruticosa- Oenothera macrocarpa- Oenothera speciosa
References
– “Oenothera Californica.” San Marcos Growers, www.smgrowers.com/products/plants/plantdisplay.asp?plant_id=3184.- “Oenothera Californica.” Missouri Botanical Garden, www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=c690.
