Cirsium occidentale
TAXONOMY
FamilyAsteraceae
GenusCirsium
Zone7
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Plants of the World OnlineABOUT
Cirsium occidentale, commonly known as the Western Thistle, is a species of thistle in the family Asteraceae. It is native to western North America, particularly in dry, open areas such as grasslands and deserts. The plant is known for its spiny leaves and striking flower heads, which can be white, pink, or purple. It typically goes dormant in the winter months.
ALSO KNOWN AS
Cnicus Lilacinus
Cnicus Neglectus
Cobwebby Thistle
Carduus occidentalis
Carduus occidentalis var. occidentalis
Cnicus occidentalis
OVERVIEW
VPDCalculate
WaterVery Dry
SoilSandy
LightDirect Bright (6 Hours)
Temperature20° C
Humidity40%
Dormancy3 Months
pH6.5
Pressure1,013 mbar
DETAILS
Care Instructions
Western Thistle thrives in full sun and prefers dry conditions. It is well-suited to moderate temperatures and low humidity. The plant is drought-tolerant and does not require frequent watering. It is best grown outdoors where it can receive plenty of direct sunlight.Soil
Cirsium occidentale prefers sandy soil with excellent drainage. It can tolerate poor, nutrient-deficient soils and does not require rich, fertile ground. Ensure the soil is well-draining to prevent root rot.Fertilizer
This plant does not require regular fertilization. If desired, a light application of a balanced fertilizer can be used sparingly during the growing season.Repotting
Repotting is generally not necessary for Cirsium occidentale as it is typically grown outdoors in its native habitat. If grown in a container, repot only when the plant outgrows its pot, ensuring to use well-draining sandy soil.Propagation
Western Thistle can be propagated by seeds. Sow seeds in the fall or early spring directly into the ground or in pots. Ensure the seeds are lightly covered with soil and kept in a sunny location.Pruning
Pruning is not required for Cirsium occidentale. However, deadheading spent flowers can help to encourage more blooms and prevent self-seeding if desired.Toxicity
Cirsium occidentale is not known to be toxic to pets or humans. However, the spiny leaves can cause physical discomfort if handled without care.Additional
Western Thistle is a hardy plant that can thrive in challenging conditions. It is an excellent choice for xeriscaping and can attract pollinators such as bees and butterflies to the garden.REVOLUTIONIZE YOUR PLANT CARE
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