Carolina Allspice (Calycanthus floridus)

Carolina Allspice

Calycanthus floridus

Warm, spicy fragrance wraps its deep red blooms like a cozy autumn hug. Deciduous flowering shrub; common names: Carolina allspice, sweetshrub.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Full sun to partial shade; produces more blooms in full sun, and tolerates dappled shade in hot summer climates
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Watering Water deeply when the top 5 cm of soil feels dry; avoid overwatering to prevent root rot
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Temperature Hardy to -15°C; tolerates summer heat up to 35°C; protect from harsh winter winds in coldest growing zones
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Characteristics

  • Leaf: Opposite, simple oval leaves; dark green foliage turning yellow in fall
  • Flower: Deep reddish-brown, magnolia-like blooms with spicy, fruity fragrance
  • Stem: Woody, multi-branched stems with smooth grayish-brown bark
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Care Guide

Watering

Keep soil consistently moist during active growth; water deeply 1–2 times weekly

Fertilization

Apply balanced slow-release fertilizer once in early spring. Avoid over-fertilizing to prevent excessive foliage growth at the expense of blooms

Banana peel compost tea:Compost banana peels for 4–6 weeks, steep in water for 24 hours, dilute 1:20 with water for root drench; avoid applying to foliage
Pruning
  • Prune immediately after flowering to shape the shrub and encourage new growth for next year's blooms
  • Remove dead, damaged, or crossing branches to improve airflow and reduce disease risk
  • Thin overcrowded stems every 2–3 years to maintain a rounded, open growth habit
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA confirmed non-toxic to cats; no reported toxicity symptoms

Humans: Non-toxic to humans; no known adverse health effects from ingestion or contact

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Garden Uses & Culture

Culture: Symbolizes warmth and comfort due to its spicy, inviting fragrance; historically used in Native American traditional medicine for minor skin irritations

Usage: Ornamental garden shrub; cut blooms for fragrant indoor floral arrangements