Japanese Pieris (Pieris japonica)

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Sunlight Bright indirect light or partial shade; avoid harsh midday summer sun to prevent leaf scorching

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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; protect from extreme heat above 28°C to prevent leaf browning

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Leaf: New growth emerges bronze-red, maturing to glossy dark green; leathery, lanceolate foliage with serrated edges
Flower: Drooping racemes of small, bell-shaped white or pale pink blooms with a subtle sweet fragrance
Stem: Slender, woody stems with dense, upright branching that forms a compact rounded habit

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Watering

Keep soil consistently moist but not soggy; apply mulch to retain moisture and regulate soil temperature

Fertilization

Feed with acidic, slow-release fertilizer once monthly. Use fertilizer formulated for acid-loving plants to maintain soil pH

Pine needle tea：Steep dried pine needles in water for 3 days; dilute 1:10 with water for root drench to maintain acidic soil conditions

Pruning

Remove spent flower clusters after blooming to encourage new foliage growth
Trim overgrown branches in late spring to maintain a compact, rounded shape
Remove damaged, diseased, or yellowing foliage promptly to prevent pathogen spread

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Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic; ingestion leads to vomiting, diarrhea, lethargy, and potential abnormal heart rate in severe cases

Humans: Contains grayanotoxins; ingestion causes oral irritation, nausea, and vomiting in humans

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Culture: Symbolizes spring renewal in Japanese traditional gardens; valued for year-round foliage interest

Usage: Ornamental garden shrub; cut flower arrangements for indoor decor