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Hardiness: 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)
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
Soil pH requirements: 6.6 to 7.5 (neutral) 7.6 to 7.8 (mildly alkaline)
Patent Information: Non-patented
Propagation Methods: By dividing rhizomes, tubers, corms or bulbs (including offsets)
On Jul 8, 2012, patriciaarln from Arlington, VA wrote:
I planted Culver's root because I wanted a native plant that would attract native bees. I have two types - both are tall plants with spiky flowers, one white, the other a lovely soft lavender. The bees love them - especially bumblebees. The blooms are ending now, in early July but they lasted a good month. Very nice back of the border plant.
Does amazingly well in an amazingly difficult area ... by the fence where the neighbor's greedy maple tree shades. Mostly clay, some sand. Blooms June - September in my garden.
On Jul 29, 2011, SALLYSWIMS22 from Mendon, MI wrote:
I found this pretty plant growing on my property along the St. Joseph river. It has been left growing wild there and comes back every year amongst the green briar, blue flag, poison ivy and other plants that were here when we moved to this house. I have planted hostas, foam flour, and a few other things on the same river bank and just let them grow. We don't try to keep this bank "cultivated"and just thin things out occasionally. This plant does not seem to be invasive. It pokes its sweet, delicate spikes high and adds a bright freshness to the foliage. I enjoy finding little natural treasures like this. I have read that it is "alien" though.
On Jun 7, 2011, cedar18 from Lula, GA (Zone 7b) wrote:
For me, the species is not as robust as 'Lavender Towers,' although it is still a very good performer. It gets 6 ft + tall and is in full bloom in early June. I had a volunteer seedling this year about 12 ft from the mother plant (and across a gravel path). I imagine it happened when I cut down the spent stalks and they flopped around the garden. It's a very nice back-of-the-border plant.
On Aug 12, 2002, lupinelover from Grove City, OH (Zone 6a) wrote:
This plant thrives in drought conditions as well as very moist. Rich fertile soil makes the stems weak, making it more suitable to poor ground. Very long bloom season.
On Jan 8, 2001, jody from MD &, VA (Zone 7b) wrote:
Veronicastrum only has 2 species, both perennial herbs closely related to Veronica. Native to USA. It used to be used medicinally but now grown as ornamentals only. It grows to 5' high with slender stems and lance shaped serrated leaves. Flowers are tubular, purpleish blue or white and bloom in summer. Best cultivated in moist soil. Full sun to part shade. Hardy zones 3-9. Propagate from seed or by division.
Regional...
This plant has been said to grow in the following regions:
Ketchikan, Alaska Fayetteville, Arkansas Kiowa, Colorado Lula, Georgia Hanna City, Illinois Washington, Illinois Waukegan, Illinois Galena, Indiana Buxton, Maine Mendon, Michigan West Olive, Michigan Minneapolis, Minnesota Rochester, Minnesota Lincoln, Nebraska Hamilton, New Jersey Colden, New York Kerhonkson, New York Pittsford, New York Boone, North Carolina Whispering Pines, North Carolina Columbus, Ohio Wadsworth, Ohio Beaverton, Oregon Ashley, Pennsylvania Cranston, Rhode Island Burns, Tennessee Arlington, Virginia Cave Spring, Virginia Charlottesville, Virginia Leesburg, Virginia Olympia, Washington Sammamish, Washington
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