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Eutrochium fistulosum
tall Joe-pye weed
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Overview
A tall, clump-forming native perennial in the family Asteraceae, native to moist meadows, stream banks, and woodland edges of eastern North America. Plants grow from a stout crown producing hollow, purple-spotted stems 5–9 feet (1.5–2.7 m) tall. Leaves are lance-shaped to elliptic, 4–8 inches (10–20 cm) long, arranged in whorls of 4–7 at each node, medium green and slightly rough-textured. In late summer, stem tips produce large, domed, flat-topped clusters 8–18 inches (20–45 cm) across of small, fuzzy, mauve-pink to pale rose-purple flower heads. Individual flower heads are tiny but massed in the hundreds per cluster, creating a soft, hazy effect. The flower clusters are among the most important late-summer nectar sources for migratory monarchs, swallowtails, and other pollinators. Distinguished from other Joe-pye weeds by its hollow (fistulous) stems and whorls of typically 6–7 leaves. Seed heads dry attractively and persist into winter.
Native Range
Native to the eastern United States and Canada, from Maine south to Florida and west to Nebraska and Texas, growing in moist to wet meadows, floodplain forests, stream banks, and disturbed moist ground, typically at low to moderate elevations. Most common in the coastal plain and piedmont of the southeastern US.Suggested Uses
Planted in rain gardens, native plantings, pond margins, and large perennial borders at 36–48 inch (90–120 cm) spacing. An essential plant for late-summer butterfly gardens — monarchs, swallowtails, and fritillaries are drawn in large numbers. Combines effectively with ornamental grasses, rudbeckias, and other late-season natives. The seed heads provide winter bird food and structure.How to Identify
Appearance
Size & Dimensions
Height5' - 9'
Width/Spread3' - 4'
Bloom Information
Blooms August through September in zones 4–9. Peak bloom typically occurs in mid-August. The large flower clusters remain attractive for 4–6 weeks. After bloom, fluffy white seed heads develop and persist into fall and winter. In zones 8–9, bloom may begin in late July.Detailed Descriptions
Flower Description
mauve-pink to pale rose-purpleFoliage Description
medium greenGrowing Conditions
Sun Requirements
Requires 4-8 hours of direct sunlight daily
• Full Sun: 6+ hours of direct sunlight
• Partial Shade: 3-6 hours of direct sunlight
• Full Shade: Less than 3 hours of direct sunlight
Care & Maintenance
Care Guide
Plant in full sun to partial shade in moist to average, humus-rich soil with a pH of 5.5–7.0. Prefers consistently moist conditions; established plants tolerate brief dry periods but decline in extended drought. Cut stems back by one-half in late May to early June (Chelsea chop) to produce a more compact plant 3–4 feet (90–120 cm) tall that does not require staking — this is strongly recommended for garden use, as unpinched plants at full height require staking in most garden settings. Divide every 3–5 years in early spring to manage the expanding clump.Pruning
Cut back by half in late May to early June to control height and eliminate staking needs. Leave seed heads standing through winter for bird interest and structural effect. Cut all stems to ground level in early spring before new growth emerges. Divide in early spring every 3–5 years by lifting and separating the crown with a sharp spade.Pruning Schedule
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late springearly spring