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Phlox Subulata (moss pink) in landscape. Photo © Elaine Mills
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Eupatorium hyssopifolium (Hyssop-leaf Thoroughwort)

Native Eupatorium hyssopifolium In February
Eupatorium hyssopifolium (hyssop-leaf thoroughwort) flower buds in August.
Native Eupatorium hyssopifolium at Ballston Mall in August.
Eupatorium hyssopifolium massed and blooming in August
Scolia dubia wasp on Eupatorium hyssopifolium (Hyssop-leaf Thoroughwort) flowers in September.

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Perennial Height: 1–3 feet Spread: 1–3 feet Bloom Color: White Characteristics Sparsely-branched, single-stemmed herbaceous perennial with clumping habit Finely textured whorled leaves Small tubular flowers arranged in flat-top clusters from July to October Flower-laden weaker stems may arch/flop over Spreads by underground rhizomes Attributes Tolerates salt; resists mildew Dried form provides winter interest and food (seeds) for birds Ethnobotanic uses Attracts a myriad of pollinators (wasps, bees, butterflies...) and other beneficial insects including predators and parasites of the brown marmorated stink bug (Penn State Extension) Growing and Maintenance Tips Soil Requirements: Well-drained, sandy preferred Light Requirements: Sun, Partial Shade Water Requirements: Dry, Moist Cut to ground in late winter; dead-head when flowers fade to prevent re-seeding Use en masse in naturalistic settings, dry meadows, sunny slopes, “hell strips,” by the shore Hardiness: USDA Zones 4–8 Excellent Replacement for: Buddleia species - Butterfly Bush (reported host of the brown marmorated stink bug) It also is native in DC and concentrated in the extreme southeastern corner of PA. It is common in the Coastal Plain and Piedmont of DE and VA but rare in the mountains. The blue-winged wasp, thread-waisted wasp (possibly grass-carrying wasp), honey bees, and red-banded hairstreak are among the many insects that frequent this plant.

Tried and True Native Plant Selections
 for the Mid-Atlantic

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Eupatorium hyssopifolium (Hyssop-leaf Thoroughwort)

Clouds of Hyssop-leaf Thoroughwort flowers are more likely to float over NoVA* roadsides and meadows than residential landscapes. However, these pollinator magnets can tolerate many challenging home environments: dry, (partially) shaded areas, sunny slopes, “hell strips” and gardens near the seashore.

*It also is native in DC and concentrated in the extreme southeastern corner of PA. It is common in the Coastal Plain and Piedmont of DE and VA but rare in the mountains.

Learn more about other Mid-Atlantic plants: 
Tried and True Native Plant Fact Sheets

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