Yates Asclepias 'Silky Mix' SKU: 308463 MODEL: 55333 Error. try again later You've successfully joined the club $ 3 .98 each Available on orders $50 to $1500. More info × Mitre 10 Variants In the same family as the Swan Plant, Asclepias Silky Mix is also known as Tropical Milkweed. An attractive source of food for monarch butterflies and other beneficial pollinators, it features gorgeous deep red and gold coloured blooms. Features and benefits Butterfly food. Fun for kids. Easy to grow.