Yellow Hornpoppy
Yellow horned poppy is a drought-tolerant perennial flower grown for its scalloped blue-green leaves and yellow flowers.
The leaves grow as a rosette of long leaves with undulating edges. In summer, it produces papery orange-yellow flowers followed by narrow, horn-like seed pods.
Yellow Hornpoppy
Yellow horned poppy is a drought-tolerant perennial flower grown for its scalloped blue-green leaves and yellow flowers.
The leaves grow as a rosette of long leaves with undulating edges. In summer, it produces papery orange-yellow flowers followed by narrow, horn-like seed pods.
Plant details
Botanic Name
Glaucium flavum
Pronunciation
GLAH-see-um FLA-vum
Mature Height
18 to 24 in.
Mature Spread
18 to 24 in.
Water usage
One Droplet: Water twice per month or less, once established.
Two Droplets: Water about once per week, once established.
Three Droplets: Water about twice per week, once established.
Flower Color
orange-yellow
Bloom time
June to July
Colorado Native
No
Natural Habitat
mediterranean and Asia
Light Requirements
sun
Cold Hardiness
USDA zones 4-9
Elevation Limit
hardy to 7,500 ft.
Performance
In some areas of the United States, yellow horned poppy has spread into natural areas and disturbed native vegetation. This has not been the case at the Water Wise Demonstration Garden; it hasn't spread much by seed. The flowers are pretty and the leaves are an interesting shape and blue color.
Maintenance
Cut leaves to ground level before new growth starts in spring. Cut off old flower stalks after blooming.
The leaves may need to be cut back in mid summer as well if they get too large, floppy and brown. A new, smaller rosette will grow and last through the rest of the growing season.