There is a white/cream flowered type and a purple flowered type. This is the purple flowered type. The plant grows true from seed.
Traditional usage (TWM): Cell proliferation, cuts, scrapes, deep injuries. Source of allantoin, mucopolysaccharides and also potentially toxic pyrrolizidine alkaloids. Often recommended for external use only.
Commonly employed as a companion plant to orchard trees and as an ingredient in compost tea and compost piles. High in protein, the leaves make a good feed for chickens and pigs and may be added to the feed of all domestic animals, helping maintain good health and weight gain.
If you don’t want the plants to spread, then cut them back when they make flowers, and mulch the crowns with the leaves. This will keep the seed from maturing and dropping, and will quickly improve the soil and contribute to the formation of large, healthy and happy plants.