Bridal Wreath Spiraea (Spiraea cantoniensis)

Bridal Wreath Spiraea

Spiraea cantoniensis

Its cascading white blooms look like a bridal veil in spring. Deciduous flowering shrub; common name: Bridal Wreath Spiraea.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Full sun to partial shade; produces the most abundant blooms in full sun exposure
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Watering Water deeply when the top 5 cm of soil feels dry; tolerates short periods of drought once fully established
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Temperature Hardy to -15°C; withstands moderate summer heat with consistent soil moisture
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Characteristics

  • Leaf: Small, oval to lanceolate, serrated margins, bright green turning yellow in autumn
  • Flower: Dense clusters of tiny double white blooms along arching woody stems
  • Stem: Slender, arching woody stems forming a rounded, cascading shrub shape
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Care Guide

Watering

Keep soil evenly moist during active growth; avoid waterlogging to prevent root rot

Fertilization

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

Eggshell powder topdress:Crush dried eggshells into fine powder; sprinkle 1 tbsp around the shrub base in early spring and gently work into the top 2 cm of soil
Pruning
  • Prune immediately after flowering to shape the shrub and encourage new growth for next year's blooms
  • Remove dead, damaged, or crossing stems in late winter to improve airflow
  • Thin overcrowded branches to maintain an open, rounded habit and promote even blooming
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA-verified 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 purity and new beginnings in wedding floral arrangements

Usage: Ornamental garden shrub; cut flower for fresh floral displays