Keith Keppel has introduced several irises over the past decade or so that are generally similar in color to Edith Wolford. They are all, from what I've seen, also superior plants to Edith Wolford. That's not surprising, Keith wouldn't have introduced them if they weren't.
In my garden, Silk Road has been the best of the bunch, it's absolutely bullet proof. I'm always a little sad to see it bloom, though. It's one of the last to open so when I see those flowers I know the iris season is almost over.
