Asclepias perennis
Aquatic Milkweed
Milkweed is so named after the milky sap that exudes from broken or cut stems, and which is a skin irritant, and toxic. It has simple leaves, and bears complex globe-shaped, fragrant flowers in Summer. Both the leaves and flowers are important as the food source for Monarch butterflies, and are also attractive to bees and other butterflies. 'Aquatic Milkweed' - as the name suggests - needs constantly wet soil. The stems are purplish in colour, and the flowers are white or pale pink
Contributed by @treefrog44
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Full sun to partial shade
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Occasional watering
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Frost Hardy: 23F (-5°C)
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Light and free draining
Common name
Aquatic Milkweed
Latin name
Asclepias perennis
type
Perennial
family
Apocynaceae
ph
4.8 - 6.5 Acid - Neutral
Plant & bloom calendar
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Best time to plant
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When the plant will bloom
full grown dimensions
Asclepias perennis
Milkweed is so named after the milky sap that exudes from broken or cut stems, and which is a skin irritant, and toxic. It has simple leaves, and bears complex globe-shaped, fragrant flowers in Summer. Both the leaves and flowers are important as the food source for Monarch butterflies, and are also attractive to bees and other butterflies. 'Aquatic Milkweed' - as the name suggests - needs constantly wet soil. The stems are purplish in colour, and the flowers are white or pale pink
Planting
From Early Spring TO Mid Spring
These plants have a long tap-root, and because if this they don't transplant easily. The best chance of a survival rate when transplanting is to do it in Spring. Generally speaking, though, it is better to sow in situ, to avoid the need to transplant. Sow in a sunny sheltered site.
Propagating by seed
From Early Spring TO Mid Spring
Sow in Spring in situ - in a sunny, sheltered site. The seeds can be sown in Autumn, but need a chilling period first (three weeks or so in the fridge would suffice)
Flowering
From Early Summer TO Late Summer
Milkweed - both the leaves and flowers -is the food source for monarch butterflies, and as such is an important plant for anyone interested in supporting the monarch butterfly population. The flowers appear in Summer