Dwarf Nettle

🌍 Non-native — naturalized; not a control priority

It stings Like all nettles, the leaves and stems bear stinging hairs that cause a sharp, burning rash on contact. Wear gloves when working near it.

A small annual nettle (usually under 2 ft) of rich, disturbed soils — gardens, field edges, manured ground. Has deeply toothed, oval leaves covered in stinging hairs and inconspicuous greenish flower clusters in the leaf axils.

Historical use: Dwarf nettle is a stinging weed, but historically nettles were not useless plants. For Urtica urens specifically, Plants For A Future lists young cooked leaves as a potherb and notes medicinal/homeopathic uses from the fresh plant, including first-aid use for stings, burns, and hives. The practical warning still comes first here: handle it like a stinging plant, not like a salad green.

How it got here: Dwarf nettle came from Europe by accident, not on purpose — it’s a classic seed-contaminant weed, riding in with crop and pasture seed and manure rather than being planted in California for food or looks. Nobody documented the exact date it reached California; it’s just been part of the same wave of European farm weeds that spread across the state’s agricultural land since the 1800s. It’s genuinely self-spreading now, not something anyone maintains: it seeds itself readily into any nitrogen-rich disturbed ground, which is why you find it in orchards, garden beds, and manured soil rather than anywhere it was deliberately introduced.

Commonly confused with: stinging nettle (Urtica dioica) — a tall perennial (3–7 ft); dwarf nettle is a small annual with proportionally broader, deeply toothed leaves. Both sting.

Where seen near you: iNaturalist — Orange County

Sources: iNaturalist · Wikipedia · UC IPM · Plants For A Future — Urtica urens