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Lowland Loosestrife

Steironema hybridum

Found in moist hardwood forests, sinkhole and depression ponds, wet meadows, other wet areas. Weakley, Flora of the Southeastern United States (2025), Northern Tier edition What its natural habitat tells you

55
Strong

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

Profile 94%

Height
1–3 feet
Light
Partial shade, Full shade, Full sun
Soil moisture
Moist to wet
Will it fit your yard?

Rare or protected plant. Specialist conservation planting; excluded from routine garden suggestions. Plant caution source

Hidden from default planting suggestions. Wildlife value and native status remain unchanged.

At a glance

Life cycle
Perennial
Bloom
May to September
Fruiting season
September to October

Not yet recorded · Spread · Leaves

Recorded in 12 Virginia 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

Moist forests

Shortia beneath rhododendrons in mountain woodland
Regional / representative. Shown: Mountains of North and South Carolina; exact site not identified, a neighboring state.Shortia beneath rhododendrons in mountain woodland, Marian Ellis Rowan, 1901. Public domain. Source record.

Depression ponds and limesinks

Shallow ponds in Coastal Plain depressions, such as limesinks and the ponds in some Carolina bays, that rise and fall with the seasons.

Sinkhole ponds

Ponds and wet depressions in limestone sinkholes of the interior valleys and plateaus (karst), separate from the Coastal Plain's limesink ponds.

Wet meadows

Open, wet, grassy or sedgy ground that is not a bog.

All habitats

Ecological relationships

Who uses this plant?

What these records mean

6CaterpillarsGenus host records with ranges including VA

Genus host records with ranges including VA · Lysimachia

  • Catocala consorsThe Consort
  • Herpetogramma pertextalisBold-Feathered Grass Moth
  • Melanchra adjunctaHitched Arches
  • Nola cilicoidesBlurry-Patched Nola
  • Papaipema lysimachiaeLoosestrife Borer
  • Papaipema nebrisStalk Borer
Shropshire & Tallamy 2025, Lepidoptera of North America north of Mexico, ZooKeys 1261 (ODbL)
10BeesSoutheastern regional records

Southeastern regional records · Lysimachia

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
4Specialist beesPollen specialists

Pollen specialists · Lysimachia

  • Macropis ciliata
  • Macropis nuda
  • Macropis patellata
  • Macropis steironematis
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
—BirdsRecorded genus food-resource interactions; not a state feeding claim

No records yet · Ants · Beetles · Flies · Adult butterflies / moths · Other wasps · Other insects

Growing and identification

Plant details

Family
Primulaceae
Flower color
Yellow
Fruit begins
September
Fruit ends
October
Growing sources and scope
Also known as

Lysimachia hybrida; Lysimachia lanceolata var. hybrida; loosestrife

Conservation status

Virginia rankS2
Global rankG5
VA statusNot verified
Federal statusNot verified

Conservation source Global and federal source

In your garden

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How to check your spot

Sources