Posted by Catmint20906 (PNW WA half hour south of Olympia - Zone 8a) on Aug 27, 2014 5:56 PM concerning plant:
In my zone 7a garden, Viola cornuta is a hardy perennial that bloomed with the crocuses in early spring and is still blooming in early fall. 'Penny White' is one of my more robust V. cornuta cultivars and has been in bloom almost continuously since March. It also has thrown off volunteers -- it is such a delight to see violets blooming in the pavement cracks instead of spotted spurge weed. Viola cornuta is also a larval host plant for a variety of fritillary butterflies. Viola cornuta grows happily in my garden in moist soil in a part sun location.