Contents
Description
Corethrogyne is a genus of flowering plants in the sunflower family, Asteraceae. This genus is native to western North America, specifically to California and Baja California. The plants in this genus are commonly known as sand aster or sea daisy. The name Corethrogyne is derived from the Greek words “koros” meaning pupil and “thryon” meaning rush, referring to the hairy stigmas of the flowers.There are approximately 12 species in this genus, which can be annual or perennial plants. The leaves of Corethrogyne are typically narrow and linear, with entire or toothed margins. The flowers are usually small and have white or yellow petals.
Taxonomic Information
| Domain | Eukaryota |
|---|---|
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Asterales |
| Family | Asteraceae |
| Genus | Corethrogyne |
Appearance
Corethrogyne plants have narrow, linear leaves that are often covered in dense hairs. The leaves can range from 1-10 cm in length and have entire or toothed margins. The flowers are typically small and have white or yellow petals. The plants can range in height from 10-50 cm, depending on the species.
Care Guide
Water
Corethrogyne plants prefer well-draining soil and do not like to be overwatered. Water the plants deeply once or twice a week, depending on the weather and the soil conditions. Avoid getting water on the leaves, as this can lead to fungal diseases.
Fertilization
Corethrogyne plants do not require much fertilization. A light application of a balanced fertilizer in the spring can help promote healthy growth and blooming.
Soil
Corethrogyne plants prefer well-draining soil that is rich in organic matter. If the soil is heavy or clay-like, amend it with compost or other organic material to improve drainage.
Sunlight
Corethrogyne plants prefer full sun to partial shade. They can tolerate some shade, but the plants may not flower as well in these conditions.
Hardiness Zones
Corethrogyne plants are hardy in USDA zones 8-10.
Common Pests & Diseases
Corethrogyne plants are generally resistant to pests and diseases. However, they can be susceptible to fungal diseases if they are overwatered or if the leaves are kept wet for extended periods of time. Aphids and mites can occasionally be a problem, but these pests can usually be controlled with insecticidal soap or other organic pesticides.
Habitat
Corethrogyne plants are native to western North America, specifically to California and Baja California. They are commonly found growing in sandy soils near the coast, but they can also be found in other habitats such as chaparral, sagebrush, and grasslands.
Question and Answer
Q: Are Corethrogyne plants drought-tolerant?
A: Yes, Corethrogyne plants are drought-tolerant once established. However, they do require regular watering during their first year of growth.
Q: Can Corethrogyne plants be grown in containers?
A: Yes, Corethrogyne plants can be grown in containers as long as the container has adequate drainage and the plants are watered regularly.
Q: Do Corethrogyne plants attract pollinators?
A: Yes, Corethrogyne plants are attractive to bees and other pollinators.
Q: How often should Corethrogyne plants be fertilized?
A: Corethrogyne plants do not require much fertilization. A light application of a balanced fertilizer in the spring can help promote healthy growth and blooming.
Related Plants
- Aster
- Erigeron
- Helianthus
- Senecio
References
- “Corethrogyne.” Wikipedia, Wikimedia Foundation, 16 Feb. 2021, en.wikipedia.org/wiki/Corethrogyne.
- “Corethrogyne.” Calflora, www.calflora.org/cgi-bin/specieslist.cgi?where-genus=Corethrogyne.
- “Sand Aster.” Las Pilitas Nursery, www.laspilitas.com/nature-of-california/plants/207–corethrogyne-sand-aster.
