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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)
Sun Exposure: Sun to Partial Shade
Danger: All parts of plant are poisonous if ingested
Bloom Color: Rose/Mauve
Bloom Time: Mid Spring
Foliage: Herbaceous Blue-Green
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
Soil pH requirements: 5.1 to 5.5 (strongly acidic) 5.6 to 6.0 (acidic) 6.1 to 6.5 (mildly acidic)
Patent Information: Non-patented
Propagation Methods: From seed; direct sow outdoors in fall
Seed Collecting: Allow seedheads to dry on plants; remove and collect seeds
On May 21, 2013, UMD_Terp from Central, MD (Zone 7a) wrote:
This a wonderful plant. I only have one and it has never seeded. I was shocked to see it listed as possibly invasive. Truth be told, I wish it was invansive.
Grows about 4-5 feet tall in my part sun garden and has very nice heads of pink flowers which look like clouds. Very nice in the spring garden easy to care for and I've never had it self sow for me, but I've moved it around a number of times in the 5 or so years I've had it so maybe that has something to do with it. A great and easy plant!
On Aug 20, 2004, pokerboy from Canberra Australia (Zone 8b) wrote:
A perennial plant giving flowers in spring and early summer. It likes full Sun and a moist humus-rich soil. Propagate by the division of clumps. pokerboy.
On Jun 30, 2004, llebpmac_bob from Zephyr Canada wrote:
It's taken three years to get this plant to flower (probably because I don't usually water my garden) and it still only has two flower heads this year but I love it now that I've seen it in bloom and am looking forward to it getting bigger next year. I hit -35 F last year and it came through with flying colours even though our snow cover was less than usual.
Now I just have to remember to point the clematis in a different direction next spring because it's climbing up the Thalictrum right now.
The flower colour is mauve, a colour which has a bad name, but I like it. I tend to work in pastels if given a choice, and this one fits in nicely with the predominantly pink and blue of my spring/early summer garden.
On May 25, 2004, MN_Darren from Saint Paul, MN wrote:
This is the easiest of the Thalictrums to grow. It can even be invasive. But, imagine a world taken over by T. aquilegifolium.... If you like the leaves of columbines, but don't like all the leaf miners and decaying foliage after bloom, this close cousin is an excellent plant. The foliage is really attractive and helps create a woodland feel for a shady area. They tolerate strong sun, but need water to compensate. The darker pink they are, the better. The almost white cultivars are just not that nice. The deep mauve 'Thundercloud' is stunning.
Seed heads are fairly attractive, so I leave them until they start ripening and turning brown. Remove them or you'll have them all over the place. They do not spread from the roots. An individual plant will form a clump about 6-8" in diameter at the base, spreading it's leaves in a 1-1.5 foot radius around that. The leaf structures are usually about 1-2 feet high, and the flowers stand on stalks about 3 feet high. They transplant very easily, and they can easily be pulled out of the ground to control them too.
On Jun 11, 2001, jody from MD &, VA (Zone 7b) wrote:
Clump forming, flowers are pink, lilacr or greenish white and are fluffy clusters on strong stems. Gray geen leaves comprise small, elliptical, toothed leaflets in a feather like arrangement. Blooms in summer.
Regional...
This plant has been said to grow in the following regions:
Juneau, Alaska Willow, Alaska Clayton, California Crescent City North, California San Francisco, California Hollister, Idaho Bolingbrook, Illinois Evanston, Illinois Mount Prospect, Illinois Indianapolis, Indiana Ames, Iowa Barbourville, Kentucky Onekama, Michigan Fridley, Minnesota St Paul, Minnesota Grandview, Missouri Cayuga Heights, New York Wallkill, New York Brook Park, Ohio Fruit Hill, Ohio Grove City, Ohio Medina, Ohio Riverlea, Ohio Eugene, Oregon Portland, Oregon Osceola, Pennsylvania Quakertown, Pennsylvania Christiana, Tennessee Arlington, Virginia Leesburg, Virginia Kalama, Washington Huntington, West Virginia Muscoda, Wisconsin Shorewood Hills, Wisconsin Waterloo, Wisconsin