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Description
Eriastrum Signatum, commonly known as the San Joaquin woolly-star, is a species of wildflower native to California. It belongs to the Polemoniaceae family and is an annual herb that typically grows up to 20-40 cm tall. The flowers bloom from March to June, displaying a beautiful shade of blue-purple.
Taxonomic Information
| Domain | Eukaryota |
|---|---|
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Ericales |
| Family | Polemoniaceae |
| Genus | Eriastrum |
Appearance
The leaves of Eriastrum Signatum are narrow and hairy, measuring about 1-2 cm long. The flowers are arranged in a cluster at the tip of the stems, each measuring about 1.5 cm wide. The petals are fused at the base, forming a tube that opens into five lobes. The stamens are prominently displayed and have yellow anthers. The fruits are small capsules that contain numerous seeds.
Care Guide
Eriastrum Signatum is a hardy plant that can grow in a range of soil types, including sandy, loamy, or clay soils. It prefers well-draining soil that is slightly acidic to neutral. The plant requires full sun exposure and can tolerate drought conditions, making it an excellent choice for xeriscaping. Watering should be done sparingly, only when the soil is dry to the touch. Fertilization is not necessary as the plant can obtain the necessary nutrients from the soil. Eriastrum Signatum can grow in USDA hardiness zones 8-10.
Common Pests & Diseases
Eriastrum Signatum is not generally susceptible to pests or diseases. However, it may be affected by root rot if the soil is waterlogged for extended periods. To prevent this, avoid over-watering and ensure that the soil is well-draining.
Habitat
Eriastrum Signatum is native to California and can be found in a variety of habitats, including grasslands, chaparral, and oak woodlands. It is a common sight in the San Joaquin Valley, where it grows in open areas and along roadsides.
Question and Answer
Q: Is Eriastrum Signatum a perennial or an annual plant?
A: Eriastrum Signatum is an annual herb.
Q: What is the blooming season for Eriastrum Signatum?
A: The flowers of Eriastrum Signatum bloom from March to June.
Q: What is the preferred soil pH for Eriastrum Signatum?
A: Eriastrum Signatum prefers slightly acidic to neutral soil with a pH between 6.0-7.0.
Q: Is Eriastrum Signatum a drought-tolerant plant?
A: Yes, Eriastrum Signatum can tolerate drought conditions and requires minimal watering.
Related Plants
- Eriastrum Diffusum
- Eriastrum Sapphirinum
- Eriastrum Trifolium
References
- Baldwin, B. G., Goldman, D. H., & Keil, D. J. (2012). The Jepson manual: vascular plants of California. University of California Press.
- USDA Plants Database. (n.d.). Eriastrum signatum. Retrieved from https://plants.usda.gov/home/plantProfile?symbol=ERSI3
- California Native Plant Society. (n.d.). Eriastrum signatum. Retrieved from https://www.cnps.org/gardening/gardening-with-natives/eriastrum-signatum
