Small-flower Thoroughwort
Eupatorium semiserratum
Found in swamp forests, seepage bogs, savannas, clay-based Carolina bays, other wetlands. FloraQuest, phone app (app page) What its natural habitat tells you
Native to Florida. How scores work Is it native here?
Profile 94%
- Height
- Up to about 3 feet
- Light
- Partial shade, Full sun
- Soil moisture
- Dry to wet
At a glance
- Life cycle
- Perennial
- Bloom
- July to October
Not yet recorded · Spread · Leaves
Recorded in 23 Florida counties.
Natural habitats
Places it grows wild. Not a planting requirement. Each habitat page lists the plants and wildlife also found there.
Open, wet, seepage-fed bogs of the Coastal Plain and Sandhills, often with pitcher plants.
Open, fire-kept longleaf pine stands over grasses and wildflowers on wet to moist sandy soil.
Also found with this plant
Wildlife whose habitat models include habitats this plant grows in, in Florida. Shared habitat, not food. 90 animals.
- American Black DuckAnas rubripes
- American CrowCorvus brachyrhynchos
- American GoldfinchCarduelis tristis
- American RobinTurdus migratorius
- American WoodcockScolopax minor
- Bachman's SparrowAimophila aestivalis
- Bald EagleHaliaeetus leucocephalus
- Barred OwlStrix varia
- Black VultureCoragyps atratus
- Black-and-White WarblerMniotilta varia
- Black-crowned Night-heronNycticorax nycticorax
- Blue GrosbeakPasserina caerulea
- Blue JayCyanocitta cristata
- Blue-gray GnatcatcherPolioptila caerulea
- Brown CreeperCerthia americana
- Brown ThrasherToxostoma rufum
- Brown-headed NuthatchSitta pusilla
- Carolina ChickadeePoecile carolinensis
- Carolina WrenThryothorus ludovicianus
- Cedar WaxwingBombycilla cedrorum
- Chimney SwiftChaetura pelagica
- Chipping SparrowSpizella passerina
- Common GrackleQuiscalus quiscula
- Common NighthawkChordeiles minor
Who uses this plant?
38CaterpillarsGenus host records with ranges including FL
Genus host records with ranges including FL · Eupatorium
- Anavitrinella pampinariaCommon Gray, Cranberry Spanworm
- Carmenta bassiformisEupatorium Borer Moth, Ironweed Clearwing Moth
- Carmenta pyralidiformisBoneset Borer Moth
- Carmenta texanaTexana Clearwing Moth
- Celastrina neglectaSummer Azure
- Chlorochlamys chloroleucariaBlackberry Looper Moth
- Chlorostrymon simaethisSilver-Banded Hairstreak
- Chrysodeixis includensSoybean Looper Moth
- Cisseps fulvicollisYellow-Collared Scape Moth
- Condica vecorsDusky Groundling
Show all 38
- Dichomeris setosellaHairy Dichomeris
- Digrammia continuataCurve-Lined Angle
- Dysodia oculatanaEyed Thyris
- Estigmene acreaSalt Marsh Moth, Acrea Moth
- Eugnosta erigeronanaFleabane Cochylid
- Eupithecia miserulataCommon Eupithacia, Common Pug
- Haploa clymeneClymene Moth
- Hellinsia unicolorUnmarked Plume Moth
- Oedemasia concinnaRed-Humped Caterpillar, Red-Humped Appleworm
- Oenobotys vinotinctalisWine-Tinted Oenobotys Moth
- Oidaematophorus eupatoriiEupatorium Plume Moth
- Orthodes majusculaRustic Quaker, Rustic Groundcat
- Ostrinia obumbratalisSmartweed Borer
- Papaipema cataphractaBurdock Border, Potato-Stalk Borer
- Papaipema harrisiiHeracleum Stem Borer Moth, Cow Parsnip Borer
- Patania silicalisHerbivorous Patania, Herbivorous Pleuroptya
- Perigea xanthioidesRed Groundling
- Platynota flavedanaBlack-Shaded Platynota
- Platynota rostranaOmnivorous Platynota
- Pleuroprucha insulsariaCommon Tan Wave
- Schinia trifasciaThree-Lined Flower Moth
- Spoladea recurvalisHawaiian Beet Webworm
- Synchlora frondariaSouthern Emerald
- Tornos scolopacinariaDimorphic Gray
- Dichomeris aglaia
- Dichrorampha leopardana
- Hellinsia habecki
- Niasoma metallicana
34BeesSoutheastern regional records
Southeastern regional records · Eupatorium
Individual names are not available yet.
Noori, Seltmann & Orr 2026, A curated and integrated dataset for exploring global bee-plant interactions (GloBI), Zenodo, CC BY 4.0
2Specialist beesPollen specialists
Pollen specialists · Eupatorium
- Colletes simulans
- Megachile xylocopoides
1BirdsRecorded genus food-resource interactions; not a state feeding claim
Recorded genus food-resource interactions; not a state feeding claim · Eupatorium
- Ortalis vetulaPlain Chachalaca
Direct food only: birds recorded eating this genus across North America. Caterpillars on host plants also feed nesting birds. NC Native Plant Society: butterfly gardening
No records yet · Ants · Beetles · Flies · Adult butterflies / moths · Other wasps · Other insects
Plant details
- Family
- Asteraceae
- Flower color
- White
Safety has not been reviewed for this plant; check toxicity and thorns before planting.
Growing sources and scope
- Bloom · “Late July to October” · FloraQuest: Carolinas, Georgia (Southeastern Flora Team), phone app (app page) · Carolinas and Georgia
- Flower color · “White” · Lady Bird Johnson Wildflower Center
- Height · “Up to about 3 feet” · Lady Bird Johnson Wildflower Center
- Life cycle · “Perennial” · Lady Bird Johnson Wildflower Center
- Light · “Partial shade; Full sun (documented habitat)” · FloraQuest: Carolinas, Georgia (Southeastern Flora Team), phone app (app page) · Carolinas and Georgia
- primary_flower_color · “white” · Lady Bird Johnson Wildflower Center
- Soil · “Dry; Moist; Wet (documented habitat)” · FloraQuest: Carolinas, Georgia (Southeastern Flora Team), phone app (app page) · Carolinas and Georgia
Also known as
Small flower Thoroughwort; Smallflower Thoroughwort
Conservation status
| Florida rank | S3 |
|---|---|
| Global rank | G5 |
| FL status | Not verified |
| Federal status | Not verified |
Will it fit your yard?
Check this plant against your county, sun and soil moisture. Conditions are checked in your browser.
Sources
- Atlas of Florida Plants
- USDA PLANTS
- Vascular Plants of North Carolina (NC Natural Heritage Program)
- FloraQuest: South Central (Weakley), phone app (app page)
- FloraQuest: Florida (Weakley), phone app (app page)
- FloraQuest: Northern Tier (Weakley), phone app (app page)
- NatureServe Explorer
- Shropshire & Tallamy 2025, Lepidoptera of North America north of Mexico, ZooKeys 1261 (ODbL)
- Noori, Seltmann & Orr 2026, A curated and integrated dataset for exploring global bee-plant interactions (GloBI), Zenodo, CC BY 4.0
- Smith, Bachelder, Russell, Morales, Mosher & Seltmann 2024, Bee-Specialization-Modeling v0.6.1 (specialist host table compiled from J. Fowler's pollen specialist bee lists), Zenodo, CC BY 4.0
- Hurlbert, Olsen, Sawyer & Winner 2021, Avian Diet Database, Scientific Data 8: 260 (CC0)
- Narango, Tallamy & Shropshire 2020, Few keystone plant genera support the majority of Lepidoptera species, Nature Communications