Halberdleaf Rosemallow

Hibiscus laevis

Native to:
Canada, United States

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Malvaceae
Genus:
Hibiscus
Species:
Hibiscus laevis
USDA Symbol:
HILA2

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Forb/herb
Height:
200 cm
Light Requirements:
Full Sun,Part Shade
Drought Tolerance:
Low
Bloom Months:
jul,aug,sep,oct
Bloom Colors:
white, pink

Wildlife Benefits

Bees:
★☆☆☆☆ Documented bee visitation (GBIF)
Butterflies & Moths:
★☆☆☆☆ Documented Lepidoptera association (GBIF)
Caterpillars:
★☆☆☆☆ Recorded caterpillar host plant (HOSTS Database)

Keystone Species Ranking

Caterpillar Keystone:
★★★☆☆ Butterfly & moth species supported by this genus (NWF)

Host Plant for Caterpillars

Chionodes hibiscella, corn earworm (Helicoverpa zea), cotton tipworm (Crocidosema plebejana)

Reported Fauna Sightings

Bees: American bumble (Bombus pensylvanicus), Ptilothrix bombiformis

Garden & Ecology Notes

Wildlife Value:
bees, butterflies, hummingbirds
Fire Ecology:
Fire adapted — tolerates or benefits from fire
Fire Notes:
Resprouts from rootstock following fire; common in fire-maintained wetland margins and floodplains.

Soil Requirements

Soil Type:
rich, moist, well-drained loamy soil
pH:
5.5 - 7.0 (slightly acidic to neutral)
Drainage:
tolerates poor drainage
Moisture:
consistently moist
Notes:
commonly found in wetlands and riverbanks

Propagation & Germination

Stratification:
None required
Scarification:
Seed coat scarification required before sowing
Germination Time:
14–30 days
Notes:
Scarification of hard seed coat improves germination. Seeds germinate readily in warm, moist conditions.

The above propagation data sourced from Claude AI

Pre-treatment: Single-step cold-moist stratification for temperate woodland species. for 60–120 days

Source: Claude AI