Eastern Sweetshrub

Calycanthus floridus

Native to:
United States

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Calycanthaceae
Genus:
Calycanthus
Species:
Calycanthus floridus
USDA Symbol:
CAFL22

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Shrub
Height:
300 cm
Light Requirements:
Part Shade
Drought Tolerance:
Medium
Bloom Months:
apr,may,jun
Bloom Colors:
maroon, brown, red
Landscaping Shrub:
Yes

Wildlife Benefits

Caterpillars:
★☆☆☆☆ Recorded caterpillar host plant (HOSTS Database)

Host Plant for Caterpillars

Double-banded Zale (Zale calycanthata)

Garden & Ecology Notes

Wildlife Value:
birds, small mammals
Deer Resistant:
Yes
Fragrant:
Yes
Fall Color:
yellow
Fire Ecology:
Fire adapted — tolerates or benefits from fire
Fire Notes:
Resprouts from root crown following fire; found in fire-influenced woodland understories.

Soil Requirements

Soil Type:
rich, well-drained loamy soil
pH:
5.5 - 7.0 (slightly acidic to neutral)
Drainage:
tolerates moderate drainage
Moisture:
consistently moist
Notes:
prefers organic matter-rich environments

Propagation & Germination

Stratification:
Cold/moist stratification required — 90–120 days
Germination Time:
30–90 days
Notes:
Seeds may have double dormancy; warm stratification followed by cold may improve germination rates.

The above propagation data sourced from Claude AI

Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).; then Cold-moist stratification for 60 days.

Source: Claude AI

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

Source: Ontario Rock Garden & Hardy Plant Society