Callirhoe seed starting.
What kind of pretreatment do Callirhoe seeds need, and how successful is the germination rate? I've heard they can be difficult. I would love to start a couple species of perrenial poppy mallow next year. Hopefully I will have better results with them, than I've had with the perrenial rose verbena, which never makes it through the winter here. The last rose verbena I grew was a very happy, spreading monster of a plant, but still shockingly didn't return.