Deep velvety purple blooms are produced continuously from spring to fall on this upright to spreading perennial. The Purple Porterweed is a medium sized variety becoming fairly dense as it matures. Porterweeds are excellent nectar producers outperforming all other butterfly plants in the garden.
Porterweeds are likely the number one favorite nectar plant for butterfly gardeners and surely for the butterflies themselves. I would be surprised to find a plant that produces a more continuous supply of nectar rich flowers from summer to frost, even most Lantana has to catch its breath from time to time during the heat of summer. This is one of the few plants that you will find consistently at nearly every butterfly conservatory. In the warmer parts of zone 8B we find that the larger growing Porterweeds, like Lavender, Coral, and Purple, occasionally return from the roots in late spring if well mulched. In zone 10 it is likely to be a reliable perennial if not evergreen. Porterweed is known to reseed particularly in mild winter climates.
Grows To: 3-4'H x 3'W
USDA Cold Hardiness Zones: 10,11, (9A-9B?)
Find your USDA Cold Hardiness Zone here
Outdoor Light: Full sun, Part sun, Part shade
Soil pH Range: Acidic, Mildly Acidic, Neutral
Native To / Cultivar Origin: American Tropics
Container Size: 3.5 inch / 16 fl.oz. / 473 ml