Common Milkweed is one of the easiest milkweeds to grow and, like all milkweeds, is the only larval host for the Monarch Butterfly. 
 
     Dramatic declines in Common Milkweed populations to make way for highways and developments corresponds with the shrinking populations of Monarchs, not quite endangered but close to it, by U.S. Fish and Wildlife Service standards.
 
     Common Milkweed features large blooms in colors ranging from whitish to deep pink on top of tall, stiff stalks with relatively large leaves.
 
     Common Milkweed attracts not only Monarchs but other butterflies and pollinators as well. 
 
     It's a big plant that likes to spread.  It's not recommended for a small garden -- although I planted it in my small garden, and it is popping up all over!  I'm fine with it, because I love the wildlife benefit.  But it (and you) might be happier to see it in a larger area.