Sure, you could do that when they're dormant in winter, but now? It would be risky business in hot weather and with the plants already growing.
We should think about the co-op idea in the fall, late fall. Or early next spring before they break dormancy.
When I got the starts of those plants in my pictures a few years ago, they came potted in 3in. pots, with leaves already going. Early April-ish when they arrived if my memory serves.
Here's a picture of my neighbor's Xanthos in the ditch. They look a lot like yours, Sandy. The County cleared out this ditch a few months ago with a backhoe, and still they're jumping right back up. The plant on the left has a leaf nearly 3ft. long already! We had an unusually rainy spring here, and they do love water!
