Black Swallow-wort (Cynanchum louiseae)

Common names:
Give a thumbs up Black Swallow-wort
Give a thumbs up Dog-strangling Vine
Give a thumbs up Louis' Swallow-wort

General Plant Information (Edit)
Plant Habit: Herb/Forb
Vine
Life cycle: Perennial
Sun Requirements: Full Sun
Full Sun to Partial Shade
Minimum cold hardiness: Zone 4a -34.4 °C (-30 °F) to -31.7 °C (-25 °F)
Maximum recommended zone: Zone 9b
Plant Height: 6 to 8 feet
Plant Spread: Spreads, forming dense colonies.
Fruiting Time: Summer
Late summer or early fall
Flowers: Showy
Flower Color: Purple
Other: Dark purple to black.
Bloom Size: 1"-2"
Flower Time: Summer
Underground structures: Rhizome
Wildlife Attractant: Bees
Other Beneficial Insects: Flies, wasps, beetles
Resistances: Humidity tolerant
Salt tolerant
Propagation: Seeds: Self fertile
Propagation: Other methods: Cuttings: Root
Pollinators: Flies
Miscellaneous: Goes Dormant

Discussion Threads about this plant
Thread Title Last Reply Replies
Plant/Weed Identification by yo10mickle Jul 23, 2019 11:16 AM 2

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