Frost Tolerance: Hardy in Phoenix
Sun Exposure: Light shade to full sun
Origin: Mediterranean region to Iran
Growth Habits: Perennial to 14 inches (35 cm), 12 inches spread (30 cm)
Flowers: Yellow flowers
Watering Needs: Moderate water, good drainage
Propagation: Seeds, division
The plant is slightly toxic, and the sap can be very irritating, producing blisters on the skin. In some areas of the country, it has escaped from cultivation and is considered a noxious weed. Reportedly its sale is forbidden in Colorado.
Blooming Habits:
Sulfur yellow flowers in spring.
Culture:
Cut out old stems as they turn yellow, and faded flowers.
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