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)
On Jun 4, 2007, akcrafter from Philadelphia, PA wrote:
One of my favorites! I grew it in Anchorage, Alaska in sun and shade. All it asked of me was lots of moisture and when it didn't get it it lay down in a pout until I watered it. Then up it went without any consequences. Very tall, interesting dark purplish stems, yellow flowers in late summer. I was told that it didn't do well in Philadelphia, but mine look fine. I know they are going to demand a lot of water so I put them in an area that has other moisture loving plants. I've planted them adjacent to Desdemona and found that they hybridized very easily, even though a gardening expert in Alaska insisted that they did not. They also reproduce madly, mostly from spilled seeds so I have learned to cut the flower tops off after they bloom. I had a period of time when I had troilious and lingularia popping up everywhere. So keep those shears close by to pop off flowers before they go to seed.
On May 28, 2006, lovedirtynails from Portland, OR wrote:
Originally, I planted this where it received morning sun and a bit of afternoon sun, and it wilted every day. I have now moved it under a overhang on the south side of the house and it is very happy. I already have buds shooting up.