Milkweed In Containers. Insert a trellis into the container or make your own tall bamboo stakes with spiraling wire wrapped around. One reason some people do not choose this method is that the seedlings grow alongside other weeds in the springtime making it more difficult to determine which plants need to weeded and which should be kept.
I grow tropical milkweed asclepias tuberosa and common milkweed asclepias syriaca in pots. Can be grown in an island container. Growing milkweed in containers is the preferable method of growth for some.
Usually a small plastic box works but a basic paper bags envelopes or even jars are also suitable provided they are dry.
Container grown milkweed can be overwintered in a building or garage and placed back outside in spring. Milkweed container tip select milkweed species that are hardy to at least one usda hardiness zone below yours. When leaving containers outside over winter using large thick containers with more soil volume will protect the roots better than a. Insert a trellis into the container or make your own tall bamboo stakes with spiraling wire wrapped around.