I ordered from Hollingsworth last year during their end of Season Sale. Their roots were fresh, healthy, and nice size. I think they are just as good as Song Sparrow and even better sizewise. If I can handle more peonies, I would definitely take advantage of their end of season sale. But there is so many I can add in a year and I think I am at my limit. I haven't looked at what they offer in their sale this year lest I get tempted again.
