The Milk Weed is a milkweed plant that grows on the Isle of Wonder. Milkweed thrives near the mucky swamp. Small bottles made of glass grow on it like fruit. The glass bottles are full of milk. The plant not only produces milk, but a container to go along with it. Alexander took a bottle of milk from the milkweed bush, causing the dogwood tree nearby to bark at him for standing too close.