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) 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)
Bloom Color: Rose/Mauve
Flower Fragrance: No fragrance
Bloom Shape: Single Bell Nodding
Bloom Diameter: Small - less than 2 inches (5 cm)
Bloom Time: Mid Summer Late Summer/Early Fall Mid Fall
Sun Exposure: Full Sun Sun to Partial Shade
Other details: Average Water Needs; Water regularly; do not overwater Suitable for growing in containers
On Mar 21, 2009, eatmyplants from Comanche county, TX (Zone 8a) wrote:
Rare in my area, I found this plant growing wild in two different places in 2007. Both were growing on barbed wire fences just above creek bottoms. See my pics. The flowers aren't exactly scarlet, but seem to be the same plant. If I've put it in the wrong category, I'll be happy to make corrections.
On Jun 12, 2005, teatimer from Lavrica Slovenia (Zone 7a) wrote:
We've had good success with Princess Diana. Comes up somewhat late, apparently requiring more warmth than many other cultivars, but grows and blooms vigorously and the flowers are long-lived. Winter is not a problem in zone 6.
This plant has been said to grow in the following regions:
, Little Rock, Arkansas Aldora, Georgia Barrington, Illinois Glencoe, Illinois Highland Park, Illinois Louisville, Kentucky Alexandria, Louisiana Harwood, Maryland Turners Falls, Massachusetts Nelson, New Hampshire Mesilla Park, New Mexico Southold, New York Belfield, North Dakota Albion, Pennsylvania Lancaster, Pennsylvania Austin, Texas De Leon, Texas Houston, Texas Uvalde, Texas Willis, Texas