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Description
Holocarpha Macradenia, commonly known as the Santa Ana Woolly Sunflower, is a perennial plant species that belongs to the family Asteraceae. It is native to California, specifically found in the southern coast ranges and southern California. This plant species is a small shrub that grows up to 3 feet tall with a spread of 3-6 feet. It is known for its silvery leaves and yellow flowers that bloom from June to October.
Taxonomic Information
| Domain | Eukarya |
|---|---|
| Kingdom | Plantae |
| Phylum | Tracheophyta |
| Class | Magnoliopsida |
| Order | Asterales |
| Family | Asteraceae |
| Genus | Holocarpha |
Appearance
Santa Ana Woolly Sunflower has a bushy and compact habit with silver-gray leaves that are about 2-4 inches long and 1/2 inch wide. The leaves are covered with dense hairs and have a woolly texture. The flowers are about 1 inch wide and are bright yellow in color. They grow in clusters at the end of the stems and bloom from June to October.
Care Guide
To care for Holocarpha Macradenia, it is important to consider the following factors:
Water
This plant requires moderate watering during the growing season, especially during hot and dry periods. It is important to water the plant deeply once a week rather than frequent shallow watering.
Fertilization
Holocarpha Macradenia does not require a lot of fertilization. You can apply a light application of slow-release fertilizer in the spring to promote growth.
Soil
This plant prefers well-draining soil that is sandy or loamy. It can tolerate poor soil conditions but not heavy clay soils.
Sunlight
The Santa Ana Woolly Sunflower requires full sun exposure to thrive. It can tolerate some shade but will not bloom as well.
Hardiness Zones
This plant is hardy in USDA zones 7-10.
Common Pests & Diseases
Holocarpha Macradenia is not prone to many pests and diseases. However, it can be affected by spider mites, aphids, and powdery mildew. Regularly checking the plant and taking appropriate measures such as pruning and using insecticidal soap can help control pests and diseases.
Habitat
Santa Ana Woolly Sunflower is native to California and is found in the southern coast ranges and southern California. It grows in open woodlands, chaparral, and coastal sage scrub habitats.
Question and Answer
Q: Is Holocarpha Macradenia drought tolerant?
A: Yes, this plant is drought tolerant but requires moderate watering during the growing season.
Q: Can Holocarpha Macradenia tolerate heavy clay soils?
A: No, this plant prefers well-draining soil that is sandy or loamy.
Q: What is the blooming season of Santa Ana Woolly Sunflower?
A: The plant blooms from June to October.
Q: What are some common pests and diseases that affect Holocarpha Macradenia?
A: The plant can be affected by spider mites, aphids, and powdery mildew.
Related Plants
Other plants that are related to Holocarpha Macradenia include:
- Holocarpha virgata
- Holocarpha heermannii
- Holocarpha obconica
- Holocarpha macradenia
References
- https://www.calflora.org/entry/plant/holocarpha-macradenia
- https://www.fs.fed.us/wildflowers/plant-of-the-week/holocarpha_macradenia.shtml
- https://www.gardenia.net/plant/holocarpha-macradenia-santa-ana-woolly-sunflower
