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) USDA Zone 9a: to -6.6 °C (20 °F) USDA Zone 9b: to -3.8 °C (25 °F)
On Mar 23, 2012, palmetto3703 from Mico, TX (Zone 8b) wrote:
Just got the plant from high country gardens, in zone 8 B with summers at 130 degrees and really hot in the sun, all my areas with really well draing soil in the sun pretty much should i try for partial shade with this plant, everyone who has success is in cooler areas than me!! YIKES!! SS
On Apr 10, 2011, Josephine_SC from Clemson, SC wrote:
Positive so far. Planted young plants from High Country Gardens late last summer. They look quite perky this spring. So far they've survived a very wet winter, a voracious groundhog and a maniacally digging dog.
On May 24, 2007, pinballer3 from Brighton, CO (Zone 5a) wrote:
Ava grew over 4 feet tall and bloomed non-stop from mid-summer to first frost. The two shades of purple in the bloom are absolutely gorgeous and it was a hummingbird favorite. It appears that the wet winter in Denver has had a negative affect on 2 of 3 plants this spring however, as their growth rate is 1/3 of the best plant.
This plant has been said to grow in the following regions:
Colorado Springs, Colorado Todd Creek, Colorado Hebron, Kentucky Lafayette, Louisiana Millis, Massachusetts Elephant Butte, New Mexico Irrigon, Oregon Arlington Heights, Pennsylvania Lincoln University, Pennsylvania Clemson, South Carolina South Salt Lake, Utah