The board is Bertie's "ladder" which he uses to get into the garage where his kibble and bed are.
They made it through the winter just fine and have grown significantly (except for the one on the far right in the photo below; I don't know why it's still so small). And the flowers are bigger than those on the parent plant.
A wider view. The edges and underside of the deck need to be painted. You can see the parent plant around the corner on the right.
This fall, when the leaves have dropped, I'll trim them back a little just to even them up and I'm hopeful that they'll come back with thicker and more even growth next spring.