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Spacing: 15-18 in. (38-45 cm) 18-24 in. (45-60 cm)
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)
Other details: This plant is attractive to bees, butterflies and/or birds Average Water Needs; Water regularly; do not overwater Requires consistently moist soil; do not let dry out between waterings
Soil pH requirements: 6.1 to 6.5 (mildly acidic) 6.6 to 7.5 (neutral) 7.6 to 7.8 (mildly alkaline)
On Jun 25, 2008, joegee from Bucyrus, OH (Zone 6a) wrote:
The flowers of this plant are a shockingly pure purple. The only other purple flowers I have seen that have this color are on bougainvilleas. This plant prefers full sun, and is drought resistant.
On Jun 11, 2003, RubyStar from Madison, WI (Zone 5a) wrote:
Definitely one of my faves in the garden. Takes awhile to establish, but very much worth the wait. Once it is established it does not require staking, if grown in proper conditions. In my experience it does better in part sun than in full sun; definitely needs a little protection during the blazing afternoons. Tolerates average water (min 1"/wk) but is happier when you're a little more generous with the water. Likes fertile soil w/organic matter.
This cultivar is distinct from the species for its taller flower stalks (30" avg in my garden) with very prominent round clusters of dark purple flower heads. Blooms over a long period of time -- as upper clusters finish, the lower ones take over the show.
A very nice plant that is easy to grow and very pleasurable to see in bloom once established.
Regional...
This plant has been said to grow in the following regions:
Flagstaff, Arizona Franklin Grove, Illinois Mount Prospect, Illinois Bloomfield, Iowa Davenport, Iowa Winchester, Massachusetts Midland, Michigan Owosso, Michigan Saint Louis, Missouri Lincoln, Nebraska Greene, New York Southold, New York Bucyrus, Ohio Corning, Ohio Freedom, Pennsylvania Kalama, Washington
3 vendors have this plant for sale.
