States
North CarolinaTennesseeGeorgiaSouth CarolinaKentuckyAlabamaArkansasFloridaLouisianaMississippiVirginiaWest Virginia
Menu

Clasping-leaf St. John's-wort

Hypericum gymnanthum

In the Carolinas and Georgia, found in pine savannas, wet pine flatwoods, sinkhole ponds (Augusta and Rockingham counties, VA), other wet to moist habitats. Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition What its natural habitat tells you

66
Strong

Native to Louisiana (estimated). How scores work Is it native here?

Profile 94%

Height
Up to about 28 inches
Light
Partial shade, Full sun
Soil moisture
Dry to wet
Will it fit your yard?

At a glance

Life cycle
Perennial
Bloom
June to September

Not yet recorded · Spread · Leaves

Recorded in 28 Louisiana parishes.

Natural habitats

Places it grows wild. Not a planting requirement. Each habitat page lists the plants and wildlife also found there.

1 of 2

Pine savannas

Open, fire-kept longleaf pine stands over grasses and wildflowers on wet to moist sandy soil.

Pine flatwoods

Flat, sandy Coastal Plain pine woodlands, wetter than sandhills and denser than savannas.

All habitats

Ecological relationships

Who uses this plant?

What these records mean

14CaterpillarsGenus host records with ranges including LA

Genus host records with ranges including LA · Hypericum

  • Acleris maculidorsanaStained-Back Leafroller Moth
  • Choristoneura rosaceanaOblique-Banded Leafroller Moth, Rosaceous Leaf Roller
  • Eupithecia miserulataCommon Eupithacia, Common Pug
  • Iodopepla u-albumBurgundy St. Johnswort Moth, White-Eyed Borer
  • Iridopsis ephyrariaPale-Winged Gray
  • Mocis latipesSmall Mocis, Striped Grass Looper
  • Nedra ramosulaGray Half-Spot
  • Nemoria bistriariaTwo-Striped Emerald, Red-Fringed Emerald
  • Platynota flavedanaBlack-Shaded Platynota
  • Probole amicariaFriendly Probole
Show all 14
  • Sparganothis sulfureanaSparganothis Fruitworm Moth, Sulfur Leafroller, False Yellow-Head
  • Tallula watsoniWatson's Tallula
  • Zale lunataLunate Zale
  • Xenotemna pallorana
Shropshire & Tallamy 2025, Lepidoptera of North America north of Mexico, ZooKeys 1261 (ODbL)
43BeesSoutheastern regional records

Southeastern regional records · Hypericum

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
0Specialist beesPollen specialists
1BirdsRecorded genus food-resource interactions; not a state feeding claim

Recorded genus food-resource interactions; not a state feeding claim · Hypericum

  • Aythya collarisRing-necked Duck
Hurlbert, Olsen, Sawyer & Winner 2021, Avian Diet Database, Scientific Data 8: 260 (CC0)

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

Growing and identification

Plant details

Family
Hypericaceae
Flower color
Orange or yellow

Safety has not been reviewed for this plant; check toxicity and thorns before planting.

Growing sources and scope
Also known as

Clasping Leaf St. Johnswort; Clasping leaf St. John's wort

Conservation status

Louisiana rankSNR
Global rankG4
LA statusNot verified
Federal statusNot verified

Conservation source Global and federal source

In your garden

Will it fit your yard?

Check this plant against your county, sun and soil moisture. Conditions are checked in your browser.

Choose a county to begin.

How to check your spot

Sources