Red Deadnettle, Purple Deadnettle, or Purple Archangel (Lamium purpureum) is a herbaceous flowering plant native to Europe and Asia. It's common name of 'dead nettle' comes from the fact that it does not sting like the Stinging nettle. 

It grows to 5–20 cm (rarely 30 cm) in height. The leaves have fine hairs, are green at the bottom and shade to purplish at the top; they are 2–4 cm long and broad, with a 1–2 cm petiole (leaf stalk- this distinguishes it from other  Henbit Dead-nettle (Lamium amplexicaule), often found alongside which is easily mistaken for it since they both have similar looking leaves and similar bright purple flowers; they can be distinguished by the stalked leaves of Red Dead-nettle on the flower stem, compared to the unstalked leaves of Henbit Dead-nettle.)

The flowers are bright red-purple, with a top hood-like petal, two lower lip petal lobes and minute fang-like lobes between.They may be produced throughout the year, including mild weather in winter. This allows bees to gather its nectar for food when few other nectar sources are available. It is also a prominent source of pollen for bees in March/April (in UK), when bees need the pollen as protein to build up their nest