I have always had these violets growing in my garden, and they are always a delight to see in the early spring. I never planted them, they appear to have always been here, seemingly popping up here and there at random. Unfortunately these do not have any fragrance like some violets do, but they are beautiful to behold.
It flowers March to June, and apart from my garden, it can be found in woods and hedgebanks. It is common in some parts of England.
March 2017, front garden, Staffordshire.