My garden doesn’t have many fall native wildflowers (yet). One I do like very much, though, is hollow Joe Pye weed (Eutrochium fistulosum).
Native to eastern North America, Eutrochium fistulosum forms a massive clump, growing 5-8 feet tall and 4 feet wide in the moist soils it likes. Mine is a bit on the drier side, and so grows correspondingly shorter, topping out at around 6 feet high and 3 feet wide. During rainy spells in summer, I can practically watch it grow.
Butterflies and bees love the flowers, which are rich in nectar.
My plant suffered a setback from last year’s weather, I think; it’s half the size it was last year. Or perhaps it’s time to dig and divide. I’m keen to keep it going because it attracts so much wildlife. And the seed heads look beautiful all winter, especially under ice.
Season: midsummer through fall; winter interest
Height: 5-8 ft.
Flower Color: Rosy purple.
Hardiness: USDA Hardiness Zone 4-8
Foliage: Lime green, lightly serrated. Red stems.
Flower: Loose, rosy purple inflorescences.
Site: Prefers moist sites but will cope with average to dry soils.
Propagation: Division spring or fall.
Exposure: Full sun to partial shade
Soil: Moist and well-drained to wet.
Origin: Eastern North America
Life Cycle: Perennial