Common name:Yellow Flag, Yellow Iris
Family: Iridaceae, Iris
Height x width: 2-4' x 1-2'
Growth rate: moderate
Foliage: linear sword-shaped to pointed tip, 3-5' long, often glaucous
Flowers: light yellow, falls 1½" or less wide and with a brown blotch, standards erect ¼-¾" long; late spring to early summer
Hardiness: zones 3-9
Soil: moist to wet
Light: sun if sufficient moisture, otherwise part shade
Pests and Problems: none serious
Landscape habit, uses: edges of waterways, ponds, water gardens, moist borders
Other interest: native to Europe but naturalized in the U.S. in many areas;
Other culture: remove seedheads to prevent seeding in moist areas as it can become invasive
Propagation: division, seeds
Cultivars:
Of the following of the most common in either the U.S. or U.K., 'Variegata' is most commonly offered in addition to the straight species.
• var. bastardii--creamy pale yellow, no blotch on falls
• 'Beuron'--yellow tetraploid
• 'Flore Pleno'--yellow, double
• 'Golden Queen'--more flowers and golden compared to species
• 'Ivory'--ivory white
• 'Sulphur Queen'--paler and more primrose yellow than species
• 'E. Turnipseed'--creamy white
• 'Variegata'--new leaves in spring striped with pale yellow
Return to Perry's
Perennial Pages | HGPO
course | PSS123 course