A tree dahlia grows in Sacramento by angela@diggingbliss | Apr 6, 2014 | annie's annuals & perennials, dahlia, dahlia imperialis, perennials, spring, tree dahlia | The upside of completely forgetting that I planted a tree dahlia, Dahlia imperialis, is that it just shot out of the ground as if by magic! We’ll have to move it when we landscape, but that will just be a nice excuse to divide it! Share this:EmailFacebookTwitterPinterestPrintMoreLinkedInTumblrPocketRedditLike this:Like Loading...