Native violets are a joy to behold! They can be found in alpine meadows, lawns, woods, marshes…wherever you live in North America, there is probably a violet adapted to your area. Almost all Violets will spread by seed, which can be produced in great quantity by some species. Some violets (such as Viola sororia & V. sororia pricaena) seed in readily & spread by thick rhizomes. Others, such as V. labradorica, spread gently by seed & delicate rhizomes. Still others (V. pubescens) produce no rhizomes at all. They are all, however, food plants for the caterpillars of several Fritillary butterflies including the large & beautiful Great Spangled Fritillary (Speyeria cybele)!
If you would like to learn more about violets a visit to The American Violet Society web site is a good place to start.