Mr. Roberts Iris flowers
(Photo courtesy of NetPS Plant Finder)
Plant Height: 10 inches
Flower Height: 18 inches
Spacing: 14 inches
Hardiness Zone: 3
Group/Class: Standard Dwarf Bearded Iris
Mr. Roberts Iris features bold gold flag-like flowers with a orange beard at the ends of the stems in late spring. The flowers are excellent for cutting. Its sword-like leaves remain green in color throughout the season. The fruit is not ornamentally significant.
Mr. Roberts Iris is an herbaceous perennial with an upright spreading habit of growth. Its medium texture blends into the garden, but can always be balanced by a couple of finer or coarser plants for an effective composition.
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. Gardeners should be aware of the following characteristic(s) that may warrant special consideration;
Mr. Roberts Iris is recommended for the following landscape applications;
- Mass Planting
- Border Edging
- General Garden Use
Planting & Growing
Mr. Roberts Iris will grow to be about 10 inches tall at maturity extending to 18 inches tall with the flowers, with a spread of 18 inches. When grown in masses or used as a bedding plant, individual plants should be spaced approximately 14 inches apart. Its foliage tends to remain low and dense right to the ground. 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 does best in average to evenly moist conditions, but will not tolerate standing water. It is not particular as to soil type or pH. It is somewhat tolerant of urban pollution. This particular variety is an interspecific hybrid. It can be propagated by division; however, as a cultivated variety, be aware that it may be subject to certain restrictions or prohibitions on propagation.