Black Swallowwort
Vincetoxicum nigrum
Last reviewed: June 2026
Light
part shade
Water
medium
Size
24"–72" H × 12"–36" W
Bloom
Jun, Jul, Aug
Native to
MO
Pollinators
bees, beetles, flies
Black swallowwort is a climbing vine that reaches 2-6 feet tall with dark purple flowers in summer. This European species spreads aggressively through underground rhizomes and wind-dispersed seeds. It can quickly overtake native vegetation and is considered invasive in many areas.
In an HOA neighborhood
Black Swallowwort takes more care to keep looking intentional in a front yard. Maintenance level: high. Consider it for backyard or mid-zone beds rather than the street edge.
- Invasive species that spreads aggressively
- Can overtake other plantings
- May be prohibited by local regulations
Wildlife value
While it attracts some pollinators like bees and flies, this invasive species actually harms wildlife by displacing native plants that provide better food sources and habitat.
Common questions
- How much sun does Black Swallowwort need?
- Black Swallowwort grows best in part shade conditions.
- When does Black Swallowwort bloom?
- Black Swallowwort blooms in June, July, and August.
- Where is Black Swallowwort native?
- Black Swallowwort (Vincetoxicum nigrum) is native to MO, per the USDA PLANTS Database and regional native plant society lists.
- What pollinators does Black Swallowwort attract?
- Black Swallowwort draws bees, beetles, and flies.
- Is Black Swallowwort HOA-friendly?
- Black Swallowwort takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.
Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Ready to grow Black Swallowwort? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
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