Cirsium discolor
TAXONOMY
FamilyAsteraceae
GenusCirsium
Zone4
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Plants of the World OnlineABOUT
Cirsium discolor, commonly known as the Field Thistle, is a biennial plant native to North America. It belongs to the Asteraceae family and is known for its tall, spiny stems and purple flower heads. The plant typically grows in open fields, prairies, and along roadsides. It has a dormancy period during the winter months.
ALSO KNOWN AS
Pasture Thistle
Carduus discolor
Cirsium discolor f. discolor
Cnicus discolor
Serratula discolor
OVERVIEW
VPDCalculate
WaterDry
SoilLoamy
LightDirect Bright (6 Hours)
Temperature20° C
Humidity50%
Dormancy4 Months
pH6.5
Pressure1,013 mbar
DETAILS
Care Instructions
Field Thistle thrives in full sun and prefers moderate temperatures. It is relatively low-maintenance and can tolerate dry conditions. Watering should be done sparingly, allowing the soil to dry out between waterings. The plant does well in average humidity levels and does not require special humidity conditions.Soil
Cirsium discolor prefers well-drained loamy soil. It can tolerate a range of soil types but thrives best in nutrient-rich soil with good drainage. Avoid waterlogged conditions as the plant prefers soil that dries out almost completely between waterings.Fertilizer
Field Thistle does not typically require fertilization. If desired, a balanced fertilizer can be applied sparingly during the growing season to support healthy growth.Repotting
As a biennial plant, Cirsium discolor does not require repotting. It completes its life cycle within two years, so repotting is generally unnecessary.Propagation
Field Thistle can be propagated by seeds. Collect seeds from mature flower heads and sow them in the desired location in the fall or early spring. Ensure the seeds are lightly covered with soil and kept moist until germination.Pruning
Pruning is not required for Cirsium discolor. However, deadheading spent flowers can help prevent self-seeding and maintain a tidy appearance.Toxicity
Cirsium discolor is not known to be toxic to pets or humans. However, the spiny stems can cause minor skin irritation if handled without care.Additional
Field Thistle is an important plant for pollinators, attracting bees, butterflies, and other insects. It can be a valuable addition to wildflower gardens and naturalized areas.REVOLUTIONIZE YOUR PLANT CARE
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