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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) USDA Zone 10a: to -1.1 °C (30 °F) USDA Zone 10b: to 1.7 °C (35 °F)
Bloom Color: Gold (Yellow-Orange) Pale Yellow Bright Yellow Green
Bloom Time: Mid Summer Late Summer/Early Fall
Foliage: Herbaceous
Other details: May be a noxious weed or invasive 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
Soil pH requirements: 5.6 to 6.0 (acidic) 6.1 to 6.5 (mildly acidic) 6.6 to 7.5 (neutral)
On Oct 15, 2007, kqcrna from Cincinnati, OH (Zone 6a) wrote:
This plant wintersowed very well for me.
It is actually a different type rudbeckia than "Irish Eyes". I wintersowed both, and both are very pretty. Both have a green eye. Irish Eyes grew larger blossoms, but had fewer petals per blossom. There is also a much less defined color change as petals run from eye to the outer edge of the flower.
On Jul 8, 2006, flamingonut from New Milford, NJ wrote:
This is one of my favorite Rudbeckias; it's well behaved, and although I've seen conflicting information in regards to it's hardiness, I've had mine for 3 years now, and hasn't reseeded. I do keep it deadheaded.
On Sep 5, 2005, tabasco from Cincinnati (Anderson Twp), OH (Zone 6a) wrote:
A departure from the traditional 'black-eyed susan' because it sports a green/yellow eye and so provides summer perennial 'gaity' with less contrast than the traditional version.
I would classify it as a tender perennial. Sometimes it returns, other times it does not. The tag says that in our area it should be grown as an annual.
Prairie Sun garners lots of compliments in our sunny border, and I like it, too, for it's easy maintenance.
On Jan 20, 2003, Terry from Murfreesboro, TN (Zone 7a) wrote:
A half-hardy annual, this variety has an unusual green center and bright orange-to-yellow petals.
July 2008 update
I snagged a gallon of 'Prairie Sun' at a local grocery store today. What a wonderfully sunny, cheery plant. The tag on this pot says hardy to zone 3, which would certainly make it more than a half-hardy annual. Guess we'll see what happens this winter!
Regional...
This plant has been said to grow in the following regions:
Calistoga, California Pacifica, California Lewes, Delaware Hebron, Kentucky Salvisa, Kentucky Mason, Michigan Spicer, Minnesota Waynesboro, Mississippi Lincoln, Nebraska New Milford, New Jersey Glens Falls, New York Ronkonkoma, New York Beaufort, North Carolina Zebulon, North Carolina Cincinnati, Ohio Salem, Oregon Drexel Hill, Pennsylvania Reading, Pennsylvania North Augusta, South Carolina Hockley, Texas Provo, Utah Kalama, Washington Lynnwood, Washington Port Orchard, Washington Menasha, Wisconsin
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