One of the later species to bloom here, Paeonia peregrina is variably blood red in colour, ranging from quite dark to brilliant. The first photo was taken on a cloudy afternoon, the second two days later in sunshine.
Foliage is distinctly different from any other species. This species doesn't bllom in my shade test patch, and the stems are a bit floppy (or lax, if you will) in my partially shaded bed; so I recommend it for full sun only, in Nova Scotia. A plant in the Annapolis Valley of the same seed batch bloomed a week to two weeks before mine.
Also in bloom here still are a few plants of P veitchii (most are bloomed out), some early obovata's, a few officinalis, some of the lactiflora hybrids; lactiflora's are starting to colour in bud and very close to opening-- a couple more days of sun and they'll pop.
Hmm, World Cup games, the bike on sunny days-- it will be hard to find time to write posts for awhile...