Hemp-nettle can be distinguished from bifid hemp-nettle by the lower petal -- this is strongly notched on bifid hemp-nettle, and unnotched or very slightly notched on hemp-nettle. In addition, bifid hemp-nettle usually has pink flowers, while North American populations of hemp-nettle usually have white flowers. Hempnettle originated in Europe, but, curiously, in Europe its flowers are mostly pink, not white.
- Family: mint (Lamiaceae)
- Habitat: roadsides, waste places
- Height: 1 to 2-1/2 feet
- Flower size: 1/2 inch across
- Flower color: white with magenta markings
- Flowering time: June to September
- Origin: Europe and Asia