Pint size pot. Native perennial. Butterfly Milkweed, and any type of milkweed, is a must for a native garden! It is adorned with showy clusters of bright orange flowers from June to August. All milkweeds, including Butterfly Milkweed, are the sole host for the beautiful and endangered Monarch butterfly, whose numbers have declined precipitously in the last 20 years. In an ideal location, a mature Butterfly Weed can become a very showy specimen, with multiple flowering stems spreading across a 2 to 3 foot high plant. This rugged species thrives in sunny locations, and in dry soil.