Showy Milkweed

Showy Milkweed is Native to the US West.

Botanical Name

Asclepias speciosa Common Name Showy Milkweed
Plant Type Herbaceous perennial Bloom Time Summer, Fall
Mature Size 2-6 ft tall, 1 ft wide Flower Color Purple, Pink
Sun Exposure Full sun Hardiness Zones Zone 9 (SF Bay Area)
Fertilizer None Necessary From Seeds Plant 1” deep
Soil pH 6.0 – 8.0 Plant Spacing 2-3 feet
Soil Type Average fertility, less than average water needs, well-drained
NOTE 1: Can be toxic to children or pets if consumed in large amounts
NOTE 2: Can be a bit invasive, plant where you can manage it or where it’s okay to spread
Water: Needs water for only the first year or two until the tap root is established.
Native Area Western US and upper Midwest

Sources:             Prairie Nursery:

The Spruce: