Soybean

Glycine max

Native to:
China, Hainan, Japan, Korea, Nansei-shoto, Taiwan

📍 View on iNaturalist →

Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Fabaceae
Genus:
Glycine
Species:
Glycine max
USDA Symbol:
GLMA4

Growth Characteristics

Life Cycle:
Annual
Growth Habit:
Forb/herb
Height:
120 cm
Light Requirements:
Full Sun
Drought Tolerance:
Medium
Bloom Months:
jun,jul,aug
Bloom Colors:
white, purple, pink

Host Plant for Caterpillars

Acontia dacia, Autoplusia egena, beet webworm moth (Spoladea recurvalis), Black zigzag (Panthea acronyctoides), Celery Looper (Anagrapha falcifera), common gray (Anavitrinella pampinaria), Common Looper Moth (Autographa precationis), corn earworm (Helicoverpa zea), Deterred Dart (Euxoa detersa), Fall armyworm (Spodoptera frugiperda), Forage Looper (Caenurgina erechtea), fragile anacamptodes moth (Anacamptodes fragilaria), garden webworm moth (Achyra rantalis), Green Cloverworm Moth (Hypena scabra), lesser cornstalk borer (Elasmopalpus lignosellus), Lucerne Moth (Nomophila nearctica), Omiodes Leafroller (Omiodes simialis), Omnivorous Leafroller (Platynota stultana), Rachiplusia ou, Richia albicosta, Salt Marsh Moth (Estigmene acrea), Southern armyworm (Spodoptera eridania), Southern beet webworm moth (Herpetogramma bipunctalis), southern emerald (Synchlora frondaria), Soybean Looper (Pseudoplusia includens), sparganothis fruitworm moth (Sparganothis sulfureana), Syngrapha rectangula, Uncertain (Allagrapha aerea), velvetbean caterpillar (Anticarsia gemmatalis), Yellow-striped armyworm (Spodoptera ornithogalli), Clouded Sulphur (Colias philodice), Orange Sulphur (Colias eurytheme), Variegated Fritillary (Euptoieta claudia)

Reported Fauna Sightings

Moths:Psamatodes abydata Butterflies:Southern Dogface (Zerene cesonia)

Garden & Ecology Notes

Wildlife Value:
birds, small mammals
Fall Color:
yellow

Soil Requirements

Soil Type:
fertile, well-drained loamy soil
pH:
5.5 - 7.0 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
consistently moist
Notes:
Thrives in nutrient-rich soils with good organic matter

Propagation & Germination

Stratification:
None required
Germination Time:
5–10 days
Notes:
Seeds germinate readily in warm soil (65-85°F). No pretreatment required for fresh seed.

The above propagation data sourced from Claude AI

ORGHPS Germination Guide: Sow @ 20C. Germinates within 3 months.

Source: Ontario Rock Garden & Hardy Plant Society