Hardiness: USDA Zone 2a: to -45.5 °C (-50 °F) USDA Zone 2b: to -42.7 °C (-45 °F) USDA Zone 3a: to -39.9 °C (-40 °F) USDA Zone 3b: to -37.2 °C (-35 °F) USDA Zone 4a: to -34.4 °C (-30 °F) 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) USDA Zone 9a: to -6.6 °C (20 °F) USDA Zone 9b: to -3.8 °C (25 °F) USDA Zone 10a: to -1.1 °C (30 °F) USDA Zone 10b: to 1.7 °C (35 °F)
Sun Exposure: Full Sun
Bloom Color: Red Bright Yellow
Bloom Time: Mid Summer Late Summer/Early Fall Mid Fall
Other details: Drought-tolerant; suitable for xeriscaping
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 the rootball From seed; direct sow outdoors in fall From seed; winter sow in vented containers, coldframe or unheated greenhouse From seed; sow indoors before last frost From seed; direct sow after last frost
Seed Collecting: Bag seedheads to capture ripening seed Allow seedheads to dry on plants; remove and collect seeds Properly cleaned, seed can be successfully stored
On Nov 27, 2010, hillfarm from Quesnel, BC (Zone 4a) wrote:
Showy wildflower here in the Cariboo region of interior British Columbia; one I get asked about often - people can't believe it's a "wild" flower & not an escaped garden flower.
Tough as nails; Zone 2 at least; drought tolerant and thrives in the most inhospitable sites - have it growing here on the roadside that runs through the farm in pure gravel where it gets run over by vehicles and scraped by the road grader. Every June the same plants are still there, blooming away!
On Aug 30, 2003, DavidPat5 from Chicago, IL wrote:
I started this plant 4 years ago from seed and it has divided so well I now have 15 plants from it. The flowers last for a week in a vase and deadheading it makes the it flower even more. Definately my favorite.
This plant has been said to grow in the following regions:
Auburn, Alabama Flagstaff, Arizona Milford, Connecticut Old Lyme, Connecticut Campbell, Florida Fruitville, Florida Webster, Florida Marietta, Georgia Villa Rica, Georgia Moscow, Idaho Chicago, Illinois Rockford, Illinois Lane, Kansas Benton, Kentucky Clover Hill, Maryland Billerica, Massachusetts Sandwich, Massachusetts Dearborn Heights, Michigan Coon Rapids, Minnesota Blair, Nebraska Lincoln, Nebraska Benton, New Hampshire Denville, New Jersey Albuquerque, New Mexico Roswell, New Mexico Chapel Hill, North Carolina Greenville, North Carolina Wake Forest, North Carolina Columbus, Ohio Mercer, Pennsylvania Columbia, South Carolina North Augusta, South Carolina Lenoir City, Tennessee Haltom City, Texas San Antonio, Texas Waxahachie, Texas Camano, Washington Clinton, Washington Kalama, Washington Rosalia, Washington Washougal, Washington Brookhaven, West Virginia