Stinging nettle – Urtica dioica
Urtica dioica L.
Urticaceae (Nettle family)
MI Status
Native
Life cycle
Erect, rhizomatous perennial.
Leaves
Opposite, egg- to lance-shaped with a rounded base and pointed tip. Petiolated leaves have coarsely toothed margins, smooth surfaces to a few hairs beneath and long, stinging hairs on the lower surface. Contact with stinging hairs can cause a skin irritation.
Stems
Four-angled, herbaceous stems are usually erect and unbranched, up to 6 feet tall and covered with stinging hairs. Contact with stinging hairs can cause a skin irritation.
Flowers and fruit
Inconspicuous, green to yellow flowers are formed in clusters in the upper leaf axils. The seed is enclosed in a single-seeded, tan, egg-shaped fruit.
Reproduction
Seeds and rhizomes that form extensive colonies.
![Stinging nettle foliage flowers](/pestid/uploads/images/Stinging-nettle-foliage-flowers-300x170.jpg)
![Hair on stem of stinging nettle](/pestid/uploads/images/Hair-on-stem-of-stinging-nettle-300x200.jpg)
![Stinging nettle leaf](/pestid/uploads/images/Stinging-nettle-leaf-300x200.jpg)
![Stinging nettle seedling](/pestid/uploads/images/Stinging-nettle-seedling-300x200.jpg)
![Stinging nettle stem](/pestid/uploads/images/Stinging-nettle-stem-241x300.jpg)