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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)
I ordered this plant several years ago as Gentiana septemfida but as it grew and began to bloom, I discovered that it was instead andrewsii. It seems to be a slow grower as it took about 10 years before it really filled out, but it is now a beautiful, multiple stemmed plant that produces dozens of blooms. I have it planted in my southwest Missouri garden in zone 6b, in light shade in ordinary garden soil under serviceberry, with hostas and violets. It might have been a more aggressive grower in more moist soil. I do try to remember to give it extra water during the hot days of July and August but it is very forgiving and blooms well anyway.
On Sep 8, 2005, tootsie from Bay City, MI (Zone 5a) wrote:
I originally found this plant growing under a grove of pine trees. I dug it up and transplanted it into my sun garden. I was surprized to see that it came up last yr. I also found some of the white ones growing in some thick brush next to my pond this summer! It appears to be a hardy plant.
This plant has been said to grow in the following regions:
Griswold, Connecticut Saint Charles, Illinois Waukegan, Illinois Loch Lynn Heights, Maryland Shelburne, Massachusetts Worcester, Massachusetts Bay City, Michigan (2 reports) Midland, Michigan St Paul, Minnesota Crestwood, Missouri Joplin, Missouri Nelson, New Hampshire Panama, New York Van Etten, New York Lake Toxaway, North Carolina Mount Airy, North Carolina Penn Wynne, Pennsylvania Pittsburgh, Pennsylvania Whitehall, Pennsylvania Leesburg, Virginia Muscoda, Wisconsin Wild Rose, Wisconsin