Contents
Description
Agnorhiza is a genus of flowering plants in the sunflower family (Asteraceae) with 5 known species. They are commonly found in western North America, particularly in California and Baja California. Agnorhiza has a woody base and a sparsely branched stem. The leaves are small and narrow, and the flowers are usually yellow, but can also be white or cream-colored.
Taxonomic Information
| Domain | Eukaryota |
|---|---|
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Asterales |
| Family | Asteraceae |
| Genus | Agnorhiza |
Appearance
Agnorhiza has a woody base and a sparsely branched stem that can grow up to 4 feet tall. The leaves are small, narrow, and often toothed, and are usually gray-green in color. The flowers are usually yellow, but can also be white or cream-colored. They bloom in the spring and summer and attract pollinators such as bees and butterflies.
Care Guide
Agnorhiza is a low-maintenance plant that requires very little care. It prefers well-draining soil and full sun exposure. Watering should be done sparingly, as the plant is drought-tolerant and can survive long periods without water. Fertilization is not necessary, but a light application of a balanced fertilizer in the spring can encourage growth. Agnorhiza is hardy in USDA zones 8-10.
Common Pests & Diseases
Agnorhiza is generally resistant to pests and diseases. However, it can be susceptible to root rot if overwatered. Aphids and spider mites may also infest the plant, but can be controlled with insecticidal soap or neem oil.
Habitat
Agnorhiza is native to western North America, particularly in California and Baja California. It is commonly found in chaparral and coastal sage scrub habitats, where it grows on dry slopes and rocky outcrops.
Question and Answer
Q: Can Agnorhiza be grown indoors?
A: No, Agnorhiza is best grown outdoors in full sun.
Q: Do Agnorhiza plants require pruning?
A: No, Agnorhiza plants do not require pruning, but dead or damaged branches can be removed as needed.
Q: Can Agnorhiza plants survive in cold climates?
A: No, Agnorhiza plants are hardy in USDA zones 8-10 and cannot survive in colder climates.
Q: Can Agnorhiza plants be propagated from cuttings?
A: Yes, Agnorhiza plants can be propagated from stem cuttings taken in the spring or summer.
Related Plants
- Encelia
- Bahia
- Ericameria
- Chrysothamnus
References
- https://en.wikipedia.org/wiki/Agnorhiza
- https://www.calflora.org/cgi-bin/specieslist.cgi?where-genus=Agnorhiza
- https://www.fs.fed.us/wildflowers/plant-of-the-week/agnorhiza_mulleri.shtml
