lorax wrote:Hmm. I've always grown both from seeds (Dahlias are native here), and I didn't think about what they do in Northern climes. QAL only survives one season here, and then the summer sun kills it.
That's very interesting. There are tons of things that are perennials where you are that we grow as annuals, starting over each year, because they are winter killed. It never occurred to me that it might work the other way around too.
Here QAL is perennial and dahlia is a tuber that is lifted in fall, stored, and replanted in spring. I don't grow them, but I believe they are somewhat short lived, like a few years.