So my question is just the one in the title there; will temperatures under forty degrees F induce dormancy in my D. binata dichotoma? It just keeps getting bigger and bigger and I don't have a place that's tall enough for it. I want to grow it outside this summer, as we have fair temps up here and I think it could handle them. But right now we're still seeing nighttime lows in the thirties. Can I put my D. binatas outside without them going to sleep?
It's the dichotoma that really needs to go, but I also have a multifida that could probably benefit from some outdoor growing. I've read that some D. binata can be fragile in high sun - what are your experiences? I live up in Washington on the coast, so it rarely gets too hot or dry around here. Summer highs are in the eighties and nineties. Any advice would be great.