Bugle is a small, spreading plant that produces a ring of blue flowers on top of each set of leaves. It has a very dark stem and dark green leaves, often tinged with blackish violet. It spreads vegetatively.
Bugle is most often found in semi-shaded, moist conditions but can also feature in sunny damp meadows.
The flower is an important early source of nectar for butterflies, especially the Duke of Burgundy, Marsh Fritillary and the Pearl-Bordered Fritillary.