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Description
Cirsium Ochrocentrum, commonly known as yellowspine thistle, is a member of the Asteraceae family. This perennial plant is native to the western United States and can grow up to 5 feet tall. It produces stunning purple flowers that bloom from late spring to early summer, attracting bees, butterflies, and other pollinators to your garden.
Taxonomic Information
| Domain | Eukarya |
|---|---|
| Kingdom | Plantae |
| Phylum | Tracheophyta |
| Class | Magnoliopsida |
| Order | Asterales |
| Family | Asteraceae |
| Genus | Cirsium |
Appearance
Cirsium Ochrocentrum has a unique appearance with deeply lobed leaves that are green on top and silvery-white on the bottom. The stem and leaves are covered in spines, which can be painful if handled without gloves. The purple flowers grow in clusters at the top of the stem and can reach up to 2 inches in diameter. The plant produces a large taproot that helps it survive in dry conditions.
Care Guide
Cirsium Ochrocentrum is an easy-to-care-for plant that thrives in most soil types and prefers full sun. It is drought-tolerant and doesn’t require much water, but it does appreciate regular watering during the growing season. Fertilize the plant once a month during the growing season with a balanced fertilizer. The plant can tolerate a wide range of hardiness zones, from 4 to 9.
Common Pests & Diseases
Cirsium Ochrocentrum is generally pest and disease-free, but it can be susceptible to aphids and spider mites. Regularly inspect your plant for any signs of infestation and treat with insecticidal soap or neem oil if necessary. Some common diseases that can affect this plant include powdery mildew and rust. Remove any infected leaves and treat with a fungicide to prevent the spread of the disease.
Habitat
Cirsium Ochrocentrum is native to the western United States and can be found growing in dry, rocky areas, and along roadsides. It is often used in xeriscaping and is an excellent addition to any drought-tolerant garden.
Question and Answer
Q: Is Cirsium Ochrocentrum a good plant for beginner gardeners?
A: Yes, Cirsium Ochrocentrum is an easy-to-grow plant that doesn’t require much care.
Q: Can I grow Cirsium Ochrocentrum in a container?
A: Yes, Cirsium Ochrocentrum can be grown in a container as long as it has enough room for its taproot to grow.
Q: How often should I fertilize my Cirsium Ochrocentrum plant?
A: Fertilize your plant once a month during the growing season with a balanced fertilizer.
Q: What is the best time to plant Cirsium Ochrocentrum?
A: The best time to plant Cirsium Ochrocentrum is in the spring after the last frost.
Related Plants
- Cirsium arvense
- Cirsium discolor
- Cirsium vulgare
References
- https://www.fs.fed.us/wildflowers/plant-of-the-week/cirsium_ochrocentrum.shtml
- https://www.gardeningknowhow.com/ornamental/flowers/thistle/growing-yellowspine-thistle.htm
- https://www.nps.gov/plants/pubs/14543.htm
