Sweet Osmanthus (Osmanthus fragrans)

Sweet Osmanthus

Osmanthus fragrans

Its tiny blooms spill honeyed scent through autumn air. Evergreen ornamental shrub or small tree; common names: sweet osmanthus, fragrant olive.

Partial sun
1–2/week
Beginner
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Plant Needs

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Sunlight Bright indirect to partial direct sunlight; tolerates light shade but produces more blooms with consistent daily sunlight.
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Watering Water deeply when the top 5–7 cm of soil is dry; avoid waterlogging to prevent root rot.
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Temperature Hardy to -10°C; prefers 15–25°C during the growing season; protect young plants from extreme frost.
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Characteristics

  • Leaf: Leathery, elliptical to lanceolate leaves with smooth or serrated margins, glossy dark green.
  • Flower: Clusters of tiny white, yellow, or orange tubular blooms with intense sweet fragrance.
  • Stem/Bark: Gray-brown, smooth bark on young plants; slightly fissured with age.
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Care Guide

Watering

Keep soil evenly moist; increase frequency during hot, dry spells

Fertilization

Apply balanced slow-release fertilizer once. Avoid high-nitrogen fertilizers that may prioritize leaf growth over flowering.

Eggshell powder topdressing:Crush dried eggshells into fine powder; sprinkle lightly on soil surface and water in to release nutrients gradually without causing odor or pest issues.
Pruning
  • Prune immediately after flowering to shape the plant and remove dead or overcrowded branches.
  • Thin dense growth to improve air circulation and sunlight penetration for better blooming the following year.
  • Remove suckers from the base to maintain a tidy form and direct energy to main branches.
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA confirms no toxic effects on cats.

Humans: No known toxic effects on humans; blooms are sometimes used in culinary applications.

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Garden Uses & Culture

Culture: Symbol of autumn, sweetness, and loyalty in traditional Chinese culture; often used in festival decorations.

Usage: Ornamental landscaping; aromatic cut blooms; flavoring for teas, jams, and cosmetics.