Chinese Hydrangea (Hydrangea chinensis)

Chinese Hydrangea

Hydrangea chinensis

Lush clusters of delicate blooms bring soft garden charm. Deciduous flowering shrub; common name: Chinese Hydrangea.

Partial sun
1–2/week
Moderate
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Plant Needs

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Sunlight Partial shade to filtered sunlight; avoid intense midday direct sun which can scorch foliage
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Watering Water deeply when the top 5 cm of soil feels dry; avoid waterlogging to prevent root rot
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Temperature Hardy to -10°C; thrives in cool to temperate conditions, with protection from extreme summer heat
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Characteristics

  • Leaf: Opposite, ovate to elliptic with serrated margins, dark green glossy foliage
  • Flower: Flat-topped corymbs with small fertile flowers surrounded by larger sterile florets; color shifts with soil pH
  • Stem: Woody upright branching stems with smooth brown bark
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Care Guide

Watering

Keep soil consistently moist but not waterlogged

Fertilization

Diluted balanced liquid feed every 2 weeks. Avoid over-fertilizing to prevent weak, leggy growth

Banana peel compost tea:Use fully composted banana peels, dilute 1:20 with water for root drench; avoid raw peels to prevent pest infestations and odor
Pruning
  • Deadhead spent flower clusters to encourage potential late-season reblooming
  • Thin overcrowded branches in late winter to improve air circulation and light penetration
  • Cut back old wood in early spring to promote vigorous new growth and larger blooms
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic due to cyanogenic glycosides; may cause vomiting, diarrhea, abdominal pain, and lethargy

Humans: Ingestion of large amounts may cause mild gastrointestinal upset including nausea and diarrhea

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental garden shrub, cut flower arrangements for indoor display