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Hardiness: 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)
Sun Exposure: Full Sun
Danger: Parts of plant are poisonous if ingested
Bloom Color: Pink Medium Blue White/Near White
Bloom Time: Mid Summer Late Summer/Early Fall
Foliage: Good Fall Color
Other details: Average Water Needs; Water regularly; do not overwater
Soil pH requirements: 6.1 to 6.5 (mildly acidic) 6.6 to 7.5 (neutral) 7.6 to 7.8 (mildly alkaline)
Propagation Methods: By dividing the rootball From seed; winter sow in vented containers, coldframe or unheated greenhouse Direct sow as soon as the ground can be worked
I bought this a three pack of this plant from Bluestone Perennials the autumn before last. They are now 48" tall (twice the height they are supposed to grow) and flopping over. I don't think it is a simple case of mislabeling, because one plant arrived in bad shape, didn't survive the winter, and they sent me a free replacement the next spring. The replacement is now just as tall as the other plants. Next year I plan to pinch them back in late spring in an attempt to prevent the need for staking.
I love this plant. Last year it started blooming in late spring/early summer, and produced tons of flowers. Late in the summer (August), it seemed to be done, so I cut it back to the ground, and within a few weeks, it had started growing back, reaching approximately half the height of the original growth, and it had lots more flowers right into fall. I like how the flower looks like a balloon at first, and then "pops" into a lovely flower, closing to a balloon again at night. Very hardy in the hot NC summer.
On Oct 23, 2004, SalmonMe from Springboro, OH (Zone 6a) wrote:
Very pretty, shorter variety that I did not need to stake. Be careful with pruning/deadheading. Only remove spent bloom, NOT the entire stalk -- you will remove newly growing buds and greatly decrease flowering time. Avoid moving plant around, its roots do best when left undisturbed. Also, not a good choice around annuals for this reason. VERY long lived once established and low-maintenance. Late emergence in spring, so be sure to mark it well before cutting back. Pretty yellow color for fall foliage.
Regional...
This plant has been said to grow in the following regions:
Calvert City, Kentucky Uxbridge, Massachusetts Brighton, Michigan Charlotte, North Carolina Cleveland, Ohio Oil City, Pennsylvania Agar, South Dakota Desoto, Texas Manassas, Virginia Richmond, Virginia