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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 Light Shade
Bloom Time: Late Spring/Early Summer Mid Summer Late Summer/Early Fall Mid Fall
Foliage: Deciduous Herbaceous
Other details: This plant is attractive to bees, butterflies and/or birds Drought-tolerant; suitable for xeriscaping Average Water Needs; Water regularly; do not overwater Self-sows freely; deadhead if you do not want volunteer seedlings next season This plant is resistant to deer
Propagation Methods: 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: Collect seedhead/pod when flowers fade; allow to dry
On Sep 6, 2004, melody from Benton, KY (Zone 7a) wrote:
I love the colors in this plant! Best treated as a short lived perennial, as they don't seem to endure for many seasons. They tend to have a powdery mildew problem, so make sure there is good air circulation and the foliage does not stay damp.
That said, the beautiful bronze flowers are just wonderful in a garden where there are too many pinks and purples. A big plus at my house.
On Aug 7, 2004, cinemike from CREZIERES France (Zone 8a) wrote:
My experience is different. I grew several of these from seed last year (2003) and they had grown to about four inches by Easter 2004. I planted them in my garden in France and did nothing to them, other than give them an automated watering every two days
for 20 minutes.
When I returned in late July, they were as shown...
It could be that they are best grown as biennials.
On Aug 1, 2004, ncgardenaddict from Kannapolis, NC (Zone 7b) wrote:
This is my second year with these. Although I love the color the plant does not generally make it past mid July. I have a variety of other Rudbeckia's and Coneflowers and this one perplexes me. I have grown it both in containers and in the ground and it does not matter where they are. I will not grow it again.
This plant has been said to grow in the following regions:
, Auburn, Alabama Marion, Arkansas Citrus Heights, California Fairfield, California Mission Canyon, California North Highlands, California San Leandro, California Jacksonville, Florida Gays, Illinois Machesney Park, Illinois Benton, Kentucky Pinconning, Michigan Blaine, Minnesota Hastings, Minnesota Paynesville, Minnesota Florence, Mississippi Maben, Mississippi Helena, Montana Swanzey, New Hampshire Averill Park, New York Ronkonkoma, New York Clyde, North Carolina Fairfield Harbour, North Carolina Cincinnati, Ohio Altoona, Pennsylvania Drexel Hill, Pennsylvania New Freedom, Pennsylvania Columbia, South Carolina North Augusta, South Carolina Knoxville, Tennessee Brazoria, Texas Oakhurst, Texas Santa Fe, Texas Camano, Washington Kalama, Washington Menasha, Wisconsin