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St. Peter's-wort

Hypericum crux-andreae

Found in pine flatwoods, pine savannas, bogs, seeps, moist to dryish forests and woodlands. FloraQuest, phone app (app page) What its natural habitat tells you

71
Strong

Native to Alabama. How scores work Is it native here?

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Height
About 2 feet
Light
Partial shade, Full sun
Soil moisture
Moist to wet
Will it fit your yard?

At a glance

Leaves
Deciduous
Bloom
June to October
Fruiting season
Summer to fall

Not yet recorded · Spread · Life cycle

Recorded in 43 Alabama counties.

Natural habitats

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

1 of 4

Forests and woodlands

Trail on Little Kennesaw Mountain.
Named place / source context. Shown: Kennesaw Mountain National Battlefield Park, Georgia, a neighboring state.Trail on Little Kennesaw Mountain., Unidentified in HFC record, undated. Public domain. Source record.

Pine flatwoods

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

Pine savannas

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

Seeps and springs

Places where groundwater keeps the soil or rock wet, such as seepage slopes and spring runs.

All habitats

Also found with this plant

Wildlife whose habitat models include habitats this plant grows in, in Alabama. Shared habitat, not food. 131 animals.

All wildlife of Alabama

Ecological relationships

Who uses this plant?

What these records mean

18CaterpillarsGenus host records with ranges including AL

Genus host records with ranges including AL · 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
  • Phlogophora irisOlive Angle Shades
  • Platynota flavedanaBlack-Shaded Platynota
Show all 18
  • Probole amicariaFriendly Probole
  • Sparganothis sulfureanaSparganothis Fruitworm Moth, Sulfur Leafroller, False Yellow-Head
  • Synchlora aerataWavy-Lined Emerald, Camouflaged Looper
  • Tallula watsoniWatson's Tallula
  • Zale lunataLunate Zale
  • Agonopterix hyperella
  • Caloptilia hypericella
  • 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
Yellow
Growth rate
Moderate
Growth habit
Single crown
Foliage color
Green
Fruit begins
Summer
Fruit ends
Fall

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

Growing sources and scope
  • Bloom · “June to October” · FloraQuest: Carolinas, Georgia (Southeastern Flora Team), phone app (app page) (ranked first; USDA PLANTS differs) · Carolinas and Georgia
  • Flower color · “Yellow” · USDA PLANTS · Nationwide species characteristics; local growing conditions may vary
  • Foliage color · “Green” · USDA PLANTS · Nationwide species characteristics; local growing conditions may vary
  • Fruit begins · “Summer” · USDA PLANTS · Nationwide species characteristics; local growing conditions may vary
  • Fruit ends · “Fall” · USDA PLANTS · Nationwide species characteristics; local growing conditions may vary
  • Growth habit · “Single crown” · USDA PLANTS · Nationwide species characteristics; local growing conditions may vary
  • Growth rate · “Moderate” · USDA PLANTS · Nationwide species characteristics; local growing conditions may vary
  • Height · “About 2 feet” · USDA PLANTS · Nationwide species characteristics; local growing conditions may vary
  • Leaf retention · “Deciduous” · USDA PLANTS · Nationwide species characteristics; local growing conditions may vary
  • Light · “Partial shade; Full sun (documented habitat)” · FloraQuest: Carolinas, Georgia (Southeastern Flora Team), phone app (app page) · Carolinas and Georgia
  • primary_flower_color · “yellow” · USDA PLANTS
  • Soil · “Moist; Wet (documented habitat)” · FloraQuest: Carolinas, Georgia (Southeastern Flora Team), phone app (app page) · Carolinas and Georgia
Also known as

Hypericum stans; St. Andrews Cross; St. Peter's wort; St. Peterswort

Conservation status

Alabama rankSNR
Global rankG5
AL statusNot verified
Federal statusNot verified

Conservation source Global and federal source

In your garden

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Sources