Perennials: One and a half thumbs up for this 'buttercup', 2 by rouge21

rouge21 wrote:
Last August 2014 I mistakenly purchased and planted Ranunculus acris "Flore Pleno" (Multiplex) (when I had intended to get Ranunculus aconitifolius "Flore Pleno").

However this planting has actually turned out to be a worthwhile addition to our garden. It bloomed for close to 4 weeks (form late May to late June) and although it does send out runners that do root (rhizomes?) they are easily removed and I see no evidence of seeding.