Plant Height: 8 inches
Flower Height: 12 inches
Spacing: 10 inches
Hardiness Zone: 7a
Other Names: Oregon Iris, Pacific Coast Iris
A lovely variety with flowers that are usually blue to deep purple, sometimes white to cream; tough, grassy foliage tends to grow higher than flowers; blooms in late spring; best in full sun and moist soil but very adaptable
Tough Leaf Iris has masses of beautiful purple flag-like flowers with white overtones and yellow streaks at the ends of the stems in late spring, which are most effective when planted in groupings. The flowers are excellent for cutting. Its grassy leaves remain green in color throughout the season. The fruit is not ornamentally significant.
Tough Leaf Iris is an herbaceous perennial with tall flower stalks held atop a low mound of foliage. Its relatively fine texture sets it apart from other garden plants with less refined foliage.
This plant will require occasional maintenance and upkeep, and should be cut back in late fall in preparation for winter. Deer don't particularly care for this plant and will usually leave it alone in favor of tastier treats. It has no significant negative characteristics.
Tough Leaf Iris is recommended for the following landscape applications;
- Mass Planting
- General Garden Use
Planting & Growing
Tough Leaf Iris will grow to be about 8 inches tall at maturity extending to 12 inches tall with the flowers, with a spread of 12 inches. When grown in masses or used as a bedding plant, individual plants should be spaced approximately 10 inches apart. It grows at a medium rate, and under ideal conditions can be expected to live for approximately 10 years.
This plant does best in full sun to partial shade. It is quite adaptable, prefering to grow in average to wet conditions, and will even tolerate some standing water. It is not particular as to soil type or pH. It is somewhat tolerant of urban pollution. This species is not originally from North America. It can be propagated by division.