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Hardiness: USDA Zone 5a: to -28.8 °C (-20 °F) USDA Zone 5b: to -26.1 °C (-15 °F) USDA Zone 6a: to -23.3 °C (-10 °F) USDA Zone 6b: to -20.5 °C (-5 °F) USDA Zone 7a: to -17.7 °C (0 °F) USDA Zone 7b: to -14.9 °C (5 °F) USDA Zone 8a: to -12.2 °C (10 °F) USDA Zone 8b: to -9.4 °C (15 °F) USDA Zone 9a: to -6.6 °C (20 °F) USDA Zone 9b: to -3.8 °C (25 °F)
Sun Exposure: Full Sun Sun to Partial Shade
Danger: Parts of plant are poisonous if ingested Handling plant may cause skin irritation or allergic reaction
Bloom Color: Gold (Yellow-Orange) Pale Yellow Bright Yellow Light Blue Medium Blue Dark Blue Blue-Violet Violet/Lavender Purple Maroon (Purple-Brown) White/Near White
Bloom Time: Midseason (M) Late Midseason (MLa)
Foliage: Herbaceous
Other details: Average Water Needs; Water regularly; do not overwater Flowers are good for cutting
Soil pH requirements: 6.1 to 6.5 (mildly acidic) 6.6 to 7.5 (neutral) 7.6 to 7.8 (mildly alkaline)
Patent Information: Non-patented
Propagation Methods: By dividing rhizomes, tubers, corms or bulbs (including offsets)
Seed Collecting: Allow pods to dry on plant; break open to collect seeds
On Apr 18, 2009, Joan from Belfield, ND (Zone 4a) wrote:Editor's Note
Rhizomes (thickened roots) and rootstocks, fresh or dry, of all Iris species and cultivars are poisonous if ingested. Symptoms include nausea, vomiting, abdominal pain, diarrhea and elevated temperature following ingestion. Some resources claim the toxic principal (irisin, iridin, irisine) only cause low toxicity if eaten.
Skin irritation can develop upon contact with seeds, rhizomes, rootstock, or cell sap.
We tend to err on the side of caution in PlantFiles, and the danger notation in the details above is to warn gardeners, parents, and pet owners to look further for more information.
On Mar 8, 2008, awahili from Pine Mountain, GA wrote:
This plant was a surprise for me. Having just moved in and having no idea of what was in the ground, I was delighted to see this beautiful 20-24 inch scape with three blooms. Each was approximately4.5-5.5 inches in diameter. Blossoms were classic in configuration and white color. This year I am adding 6 new purples and will be propagating the white. Very stately and graceful addition to my garden plan.
On Nov 24, 2006, tulipgarden from Pella, IA wrote:
I grew this plant for the first time in 2006. They all came up in the spring and were very showy. Because of the early dry summer they died off quickly. Then due to a mild fall and lots of moisture they have sprouted (November 2006). Use caution when planting to ensure they are at least 8 inches deep to help keep them from sprouting to early.
On May 2, 2006, JenniferSM from Woodland, CA wrote:
There is no doubt, this is a beautiful flower. But, it only lasts about five days until it wilts, and "poof" its gone! Seems like such a short climax after having sent up its green "leaves" almost for three months prior, which aren't particularly attractive.
On Jun 6, 2005, PurplePansies from Deal, NJ (Zone 7a) wrote:
Dutch iris is much smaller than bearded iris and much bigger than dwarf irises (blossom size that is) than dwarf irises like iris reticultata. The most eye catching varieties seem to be the blues and violets with yellow streaks or flashes of an eye that jump out at you. These have proved fairly easy to grow in well drained soil and full sun. No special care required. Minimal winter mulch. On a down side these are NOT FRAGRANT IRISES! Boo hoo I love the fragrant ones..... :)
I have a bed of blue and white Dutch iris that bloom each year. The blooms seem to pull the stems over however. Is this normal? This year several of the blues came on with two blooms per stem. Very nice. I wonder if I need to feed them or stake them up? This is the 3rd year for this bed and I am pleased with the result.
Anything which thrives despite Texas heat, drought, black clay soil, and neglect earns a positive+ rating here. The blade of the foliage rolls itself into a tube, giving a round appearance like large chives. The purple blooms appear in April. This fourth year some stalks have two. Height is 18" to 24". Bulbs were bought at Home Depot in 1999, but the picture on the package promised blue flowers. Oh, well!
Regional...
This plant has been said to grow in the following regions:
Auburn, Alabama Apache Junction, Arizona Fayetteville, Arkansas Canoga Park, California Fremont, California Oak View, California Sacramento, California San Bernardino, California San Leandro, California Woodland, California Washington, District Of Columbia Canton, Georgia Hahira, Georgia Pine Mountain, Georgia Kuna, Idaho Mount Prospect, Illinois Pella, Iowa Urbandale, Iowa Olathe, Kansas Lexington, Kentucky Crowley, Louisiana Franklin, Louisiana New Orleans, Louisiana Florence, Mississippi Metuchen, New Jersey Lake Toxaway, North Carolina Dayton, Ohio Tulsa, Oklahoma Gold Hill, Oregon Portland, Oregon Redmond, Oregon Wilkes Barre, Pennsylvania Mcdonald, Tennessee Powderly, Texas Roanoke, Texas San Antonio, Texas Newport News, Virginia Kalama, Washington Menasha, Wisconsin
8 members have or want this plant for trade.
