Iris Sibirica 'Dewful'

Siberian Iris

Iris sibirica ‘Dewful’ — commonly called Siberian iris — is a refined clump-forming perennial featuring soft lavender-blue flowers with delicate veining and lighter highlights, blooming in late spring to early summer above slender upright green foliage. Its graceful flowers and narrow foliage give it a light, elegant presence that works well in borders and naturalized plantings.

Type: Perennial

Mature Size:
Width: 18–24 in.
Height: 28–34 in.

USDA Zones: 3a–8b

Form: Upright, clumping

Light: Full sun to partial shade

Soil: Average to moist, well-drained soil; tolerant of loam and clay

Water: Medium; prefers evenly moist soil, especially during bloom

Wildlife: Deer resistant; attracts butterflies

Features & Landscape Uses: Excellent for perennial borders, rain gardens, pond margins, and naturalized groupings. Its soft flower color blends well with pastel and cool-toned plant combinations.

Care: Water during extended dry periods, especially in spring. Divide clumps every 4–5 years in early spring or late summer to maintain vigor. Remove spent flower stems after bloom and cut back foliage in late fall or early spring.

Plant type

Perennial

Height

28-36"

Width

18-24"

Hardiness zones

3–8

Sunlight

Full Sun, Partial Shade

Bloom time

Summer

Flower color

Blue Green

Leaf color

Dark Spring Green

Attracts

Butterflies

Soil

Loamy, Moist well-drained, Tolerant of Clay

Landscape use

Accent Plant, Border, Container, Mass Planting

Shape

Clumping, Upright

Deer resistant

Yes

Drought tolerant

No