Contents
Description
Centaurea Calcitrapa, commonly known as Star Thistle, is a perennial plant native to the Mediterranean region. It belongs to the Asteraceae family and is known for its beautiful purple flowers that bloom in summer.
Taxonomic Information
| Domain | Eukaryota |
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Asterales |
| Family | Asteraceae |
| Genus | Centaurea |
Appearance
Centaurea Calcitrapa grows up to 1 meter tall and has a deep root system. The leaves are green in color and are covered in fine hairs. The flowers are vibrant purple in color and bloom in summer. The plant produces small, hard, spiny fruits that resemble a medieval weapon known as the caltrop.
Care Guide
Centaurea Calcitrapa is a low-maintenance plant that is easy to care for. It requires moderate watering and can tolerate dry soil conditions. The plant prefers well-draining soil and full sunlight. It can grow in hardiness zones 6-10.
Common Pests & Diseases
Centaurea Calcitrapa is susceptible to aphids and spider mites. These pests can be controlled using insecticidal soap or neem oil. The plant is also susceptible to fungal diseases such as powdery mildew and rust. These diseases can be controlled using a fungicide.
Habitat
Centaurea Calcitrapa is native to the Mediterranean region but has been introduced to other parts of the world, including North America. The plant thrives in dry, rocky, and sandy soils and is often found in grasslands, meadows, and along roadsides.
Question and Answer
Q: Is Centaurea Calcitrapa poisonous?
A: No, Centaurea Calcitrapa is not poisonous.
Q: Can Centaurea Calcitrapa be grown indoors?
A: No, Centaurea Calcitrapa is a plant that requires full sunlight and is best grown outdoors.
Q: How often should Centaurea Calcitrapa be fertilized?
A: Centaurea Calcitrapa does not require frequent fertilization but can benefit from a slow-release fertilizer applied in the spring.
Q: How do I propagate Centaurea Calcitrapa?
A: Centaurea Calcitrapa can be propagated through root cuttings taken in the fall or by seed sown in the spring.
Related Plants
- Centaurea cyanus (Cornflower)
- Centaurea montana (Mountain Bluet)
- Centaurea dealbata (Persian Cornflower)
References
- https://www.gardeningknowhow.com/ornamental/flowers/star-thistle/star-thistle-weed.htm
- https://www.bhg.com/gardening/plant-dictionary/perennial/star-thistle/
- https://www.gardenia.net/plant/centaurea-calcitrapa-star-thistle
