Iris tectorum

Also Known As

Japanese Roof Iris
Tectorum Blue Iris

Plant type

perennial, bulb / corm / tuber

size

H: 12"-18"
W: 12"

planting zones

5a-9b

More Options

Iris tectorum plant details

Iris tectorum is a broadleaf evergreen perennial bulb / corm / tuber with green foliage. In spring and summer purple flowers emerge. Drought tolerant once established. Does well in lean soil. A good option if you're seeking something verticillium wilt resistant.

CHARACTERISTICS OF Iris tectorum

Plant type: perennial bulb / corm / tuber
Plant family: iridaceae
Foliage: evergreen green
Mature size: 12 IN wide, 12 IN - 18 IN - tall
Flowers: purple blooms in spring and summer
Uses: clumping, container plant, cutting garden, edging plant, fragrant, mass-planting, rock garden

GROWING CONDITIONS for Iris tectorum

USDA Zones: 5a - 9b
Sun exposure: sun - shade
Resistant to: deer and rabbit, verticillium wilt
Soil needs: lean

Nursery contributed plant descriptions

Roof iris has lovely, large, six inch wide blue flowers with white and purple markings. The foliage is arranged in fans of narrow, lance-shaped, ribbed, glossy, upright leaves that add a nice texture to the garden. Commonly called roof iris because it has in the past been grown on thatched roofs in both Japan and China.

By: Phoenix Perennials and Specialty Plants Ltd.

As above but the normal blue flowered wild type. ZONE 4

By: Arrowhead Alpines

An evergreen, rhizomatous perennial. Mid to dark green, ribbed, strap-like leaves held in fans. In early Summer, branching stalks of beardless, lavender iris flowers are freely produced. For any moist soil high in organic matter. A gross feeder, so feed well. Tolerant of quite heavy shade.Traditionally grown on thatch rooves in Japan.

By: Zephs

Strong leaf and flower make a first class plant. Grows 12" tall and spread approximately 24". Recommended by: the United States National Arboretum.

By: Fantastic Plants

A lovely, perennial iris that does well in the heat here in Zone 8B in dry shade. It has fans of glossy green, 12? leaves and beautiful lavender flowers, 2-3? across, with dark veins and a white crest on each fall. Blooms in early summer. It spreads readily, quickly producing a nice mass.