How to Grow and Care for Vincetoxicum

Black swallow-wort (Vincetoxicum nigrum) is an invasive perennial vine that thrives in sunny open areas. Black swallow-wort forms dense colonies that overwhelm native ground vegetation and jeopardize natural habitats. It spreads invasively and aggressively through a vivacious root system and wind-dispersed seeds.

Swallow wort (Vincetoxicum hirundinaria) is a toxic plant whose scientific name comes from the Latin words for “conquer” and “poison.” The Latin word “hirundo” in its specific epithet means “swallow,” referring to the swallowtail shape of the seedpods. Gardeners in the U.S. are advised not to plant this species, as it is an invasive alien.

Stems are erect unbranched 30 to 60 cm high. The leaves are opposite to the stem with a petiole of 5 to 16 mm in length. I am. There are fine hairs on the veins on both sides of the leaves. The flowering season is summer. A flower pattern comes out from the axillary part of the upper part of the stem and a large number of inflorescences appear before that. The corolla is white and has 5 splits about 2 cm in diameter. The accessory corolla is pale yellow. The calyx splits into five. At the end of the flower it attaches a fruit unique to the potato family (bag fruit) with a length of 4 to 6 cm.

Vincetoxicum inamoenum is a perennial herb with slender, twining stems and understated green foliage. Characterized by small, inconspicuous flowers that blend into its native woodland environments, it often climbs neighboring plants for support. Its leaves are lanceolate with acute tips, serving as efficient sunlight catchers beneath the forest canopy. Vincetoxicum inamoenum's resilience is displayed in its adaptation to dappled shade and varied soil conditions.

Dog strangling vine is a fascinating species with many unique characteristics. This plant is known for its invasiveness, spreading quickly and aggressively in various ecosystems. It has been a major concern for gardeners and ecologists due to its ability to outcompete native plants. Additionally, dog strangling vine is toxic to many herbivores, making it a less favorable option for grazing animals. Despite its negative impacts, it has attractive clusters of creamy white flowers during the blooming season, adding beauty to its surroundings.