Categories blue & purple flowers | Perennials | red & pink flowers | Asclepias syriaca Asclepias syriaca Common name(s): Common Milkweed, Silkweed, Butterfly Flower and others Synonyme(s): N/A Family: Apocynaceae Origin: North America More infos: N/A Related plants:Adenium obesum cv. Allamanda cathartica Calotropis procera Ceropegia ampliata Ceropegia linearis ssp. woodii Dischidia ruscifolia Duvalia pubescens Hoya kerrii Hoya kerrii “Variegata” Huernia hystrix Mandevilla sanderi Nerium oleander “Variegata” Orbea semota Orbea variegata Pachypodium geayi Pachypodium horombense Pachypodium lamerei Pachypodium namaquanum Pachypodium saundersii Plumeria sp. Stapelia asterias Vinca major Vinca minor Vinca minor “Alba” Vinca minor “variegata” Vincetoxicum hirundinaria