Urtica chamaedryoides is a small native annual in the stinging nettle family, found in moist, organically rich woodlands across the southeastern United States and northern Mexico. It grows 6–24 inches tall and bears inconspicuous greenish flowers. Though commonly managed as a weed in Florida lawns and pastures, it is a legitimate native plant with documented ecological value.
It performs best in moist, fertile soils with partial to dappled shade, though it tolerates disturbed, sunnier sites. It spreads entirely by seed and can form dense patches where soil is rich and consistently moist. All vegetative parts bear stinging trichomes; gloves are necessary when handling or pulling plants. In zones 9–10, germination can occur in cool, wet winter conditions, making it a year-round presence.
Heartleaf nettle serves as a larval host for the red admiral butterfly (Vanessa atalanta) and several anglewing species (Polygonia spp.). Young leaves of Urtica species become edible when briefly boiled or steamed, which neutralizes the sting.
Ecoregions:Eastern Temperate ForestsGreat Plains
These dates are for Zone 6b. Enter your ZIP to time every job to your own frost dates.
- watch · Any time in fallIn zones 9–10, monitor for a second flush of seedlings following fall rains, especially in lawns, pastures, and disturbed ground.
- watch · Any time in winterIn warmer zones, plants can germinate through winter in cool, moist conditions; inspect seed-bank areas and remove early to reduce spring pressure.
- sow · Apr 10Surface-sow seeds in a prepared moist, shaded bed around last frost date; do not cover, as seeds need light to germinate.
- watch · Apr 24Check moist shaded areas for emerging seedlings; hand-pull or hoe before plants establish if population control is the goal.
- watch · Any time in summerInspect leaves for red admiral or anglewing caterpillars before any cutting; relocate larvae to nearby plants before removing stems.
- cut · Any time in summerCut plants to ground level before seed set to prevent unwanted spread; wear long sleeves and gloves to avoid stinging trichomes.