Mexican Buttonbush

Cephalanthus salicifolius

Native to:
Honduras, Mexico, United States

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Rubiaceae
Genus:
Cephalanthus
Species:
Cephalanthus salicifolius
USDA Symbol:
CESA3

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Shrub , Tree
Height:
600 cm
Light Requirements:
Full Sun,Part Shade
Drought Tolerance:
Low
Bloom Months:
jun,jul,aug
Bloom Colors:
white, cream
Landscaping Shrub:
Yes

Wildlife Benefits

Bees:
★☆☆☆☆ Documented bee visitation (GBIF)
Butterflies & Moths:
★☆☆☆☆ Documented Lepidoptera association (GBIF)

Keystone Species Ranking

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

Reported Fauna Sightings

Hummingbirds: Amazilia yucatanensis

Garden & Ecology Notes

Wildlife Value:
bees, butterflies, hummingbirds, waterfowl
Deer Resistant:
Yes
Fragrant:
Yes
Fall Color:
yellow

Soil Requirements

Soil Type:
moist, fertile, well-drained loamy soil
pH:
6.0 - 7.5 (slightly acidic to neutral)
Drainage:
tolerates poor drainage
Moisture:
consistently moist
Notes:
Commonly found along riverbanks and wetlands

Propagation & Germination

Stratification:
Cold/moist stratification required — 60–90 days
Germination Time:
14–30 days
Notes:
Seeds germinate best with consistent moisture and light. Cold stratification improves germination rates.

The above propagation data sourced from Claude AI