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Hardiness: USDA Zone 4b: to -31.6 °C (-25 °F) 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)
Sun Exposure: Sun to Partial Shade Light Shade
Danger: N/A
Bloom Color: Blue-Violet
Bloom Time: Late Spring/Early Summer Mid Summer
Foliage: Grown for foliage Herbaceous Dark/Black
Other details: Average Water Needs; Water regularly; do not overwater
Soil pH requirements: 5.6 to 6.0 (acidic) 6.1 to 6.5 (mildly acidic) 6.6 to 7.5 (neutral)
Seed Collecting: Properly cleaned, seed can be successfully stored N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed
On Jan 10, 2009, plantaholic186 from Winnetka, IL wrote:
This plant does very well in my wet-but-not-quite-bog garden, and self-seeds happily. I'm not sure if the seedlings will come true, since most have pretty green leaves, but some do have a purplish tinge to them.
Overall easy-peasy and flowers repeatedly all fall.
On Mar 19, 2007, berrygirl from Braselton, GA (Zone 7b) wrote:
Short 15" - Plant 12" apart. zone 4-9 Highly decorative. Beautiful flowers of deep electric lavender-blue above the decorative mound of fernlike foliage. The leaves take on a rich, dark purple hue in spring and again in fall. In between, they turn somewhat greener in summer depending on light intensity. A Blooms of Bressingham selection.
On Mar 11, 2006, SW_gardener from (Steven) GTA, ON (Zone 6a) wrote:
My plant is in full sun, it does well there. Flowers late spring/early summer and mine even flowered a second time!!! The second flowering wasn't much though. Be carefull when raking mulch and dead leaves off in the spring, cause I just tore part of the plant out. It still had roots on it though so I put it back in the ground :)
On Jul 29, 2005, jamie68 from Vancouver, WA (Zone 8b) wrote:
Very generous with the flower stalks, unlike some of the others. And the foliage stays fresh for quite some time!!
Regional...
This plant has been said to grow in the following regions:
Winnetka, Illinois South China, Maine Winchester, Massachusetts Dearborn Heights, Michigan Marine City, Michigan South Rockwood, Michigan Wallkill, New York Watertown, New York Summerville, South Carolina (2 reports) Maryville, Tennessee Lexington, Virginia Olympia, Washington Vancouver, Washington
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