Siamese Cassia

Senna siamea

Native to:
Laos, Myanmar, Sri Lanka, Thailand, Vietnam

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Fabaceae
Genus:
Senna
Species:
Senna siamea
USDA Symbol:
SESI3

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Tree
Height:
1800 cm
Light Requirements:
Full Sun
Drought Tolerance:
High
Bloom Months:
jan,sep,oct,nov,dec
Bloom Colors:
yellow

Host Plant for Caterpillars

Anabasis ochrodesma

Garden & Ecology Notes

Wildlife Value:
bees, butterflies
Fire Ecology:
Fire adapted — tolerates or benefits from fire
Fire Notes:
Resprouts vigorously from the base after fire or cutting damage.

Soil Requirements

Soil Type:
rich, well-drained loamy soil
pH:
5.5 - 7.5 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
dry to moderate
Notes:
prefers fertile soils in native range

Propagation & Germination

Stratification:
None required
Scarification:
Seed coat scarification required before sowing
Germination Time:
7–21 days
Notes:
Mechanical scarification or hot water treatment improves germination. Seeds germinate readily after treatment.

The above propagation data sourced from Claude AI