1 / 4

Key characteristics

Classification: Tall Bearded Iris (TB), Self
Height: 31 inches
Width: 1 to 1 1/2 feet
Flower color: Deep purple-black with dark purple and violet beards
Foliage color: Medium green, upright, sword-shaped foliage
Bloom time: Late season
Light: Full sun
Water: Moderate, drought tolerant once established
Growing zone: USDA zones 4 to 8

Irises

Iris 'All Night Long'

All Night Long Iris

Iris 'All Night Long' is a tall bearded iris with heavily ruffled flowers that bloom late in the iris season. The standards and falls are an exceptionally deep purple-black, creating an almost uniform dark flower, with the velvety falls appearing especially intense. Dark purple beards soften to violet toward their centers, while a slight lacy fringe adds detail to the style crests. The flowers have a light, sweet fragrance.

Light

Full sun

Water

Moderate, drought tolerant once established

Bloom time

Late season

Find this plant

Works well in

Formal Gardens
Borders
Cut Flower Gardens
Walkways
Cottage Gardens

Companion plants

Dwarf golden barberry · Spirea · White peony · Yellow columbine · Silver artemisia · White candytuft · Creeping Jenny

Design tip

Give 'All Night Long' a light backdrop so its nearly black flowers remain clearly outlined rather than disappearing into surrounding foliage. Pale stone, cream flowers, or golden leaves nearby can emphasize its deep purple undertones while keeping the composition balanced.