Intermediate Iris 'Az Ap' bridges the gap between the delicate dwarf varieties and the towering tall bearded irises, blooming in May with showy 5-inch flowers that showcase the distinctive bearded falls characteristic of this genus. Growing 18 to 24 inches tall with a spread of 12 to 18 inches, this rhizomatous perennial thrives in hardiness zones 3 through 8 and brings reliable color to borders and garden beds without the fussiness of taller varieties. Its drought tolerance and deer resistance make it a low-maintenance addition once established, though it rewards consistent moisture from spring through six weeks after flowering ends.
Full Sun
Moderate
3-8
24in H x 18in W
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Moderate
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The branched flower stalks rise cleanly above the foliage, displaying upright standards with elegantly pendant falls adorned with prominent beards. Intermediate bearded irises occupy a sweet spot in the iris season, blooming between their shorter and taller cousins with some overlap, extending your iris display through late spring. This variety thrives in sandy soils with excellent drainage and actually improves in performance when rhizomes are planted on slopes or in raised beds, a practical detail that transforms potential problem sites into thriving plantings.
Intermediate Iris is grown primarily as an ornamental garden flower, valued for its striking spring bloom and compact form that fits well in borders, rock gardens, and mixed perennial beds. The showy flowers with their distinctive bearded falls make it a focal point in late spring gardens, while its moderate size and manageable spread allow it to anchor plantings without overwhelming surrounding plants.
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Remove spent flower stalks after blooming concludes to encourage the plant's energy toward rhizome development and next season's growth. Cut back foliage in late fall or early winter once it has completely dried and withered, trimming it back to about 4 to 6 inches above the soil surface to reduce pest habitat and disease pressure.
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