Oak-leaved Geranium (Pelargonium quercifolium)

Oak-leaved Geranium

Pelargonium quercifolium

Its oak-shaped leaves carry a spicy, citrusy scent, a fragrant addition to sunny windowsills. Evergreen perennial herb; common name: oak-leaved geranium.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Full to partial direct morning sun for optimal blooming; avoid intense midday sun to prevent leaf scorching; tolerates bright indirect light
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Watering Allow the top 2–3 cm of soil to dry completely between waterings; avoid overwatering to prevent root rot and fungal diseases
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Temperature Thrives in temperatures between 15–25℃; protect from frost below 10℃ in winter to prevent foliage damage
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Characteristics

  • Leaf: Lobed, oak-shaped foliage with fuzzy texture; releases spicy citrus scent when crushed
  • Flower: Clusters of small, pink to pale magenta five-petaled blooms
  • Stem: Succulent, green to reddish-brown stems with fine hairs
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Care Guide

Watering

Keep soil evenly moist but not waterlogged; water when top 2 cm feels dry

Fertilization

Diluted balanced liquid fertilizer every 2 weeks. Use a low-nitrogen fertilizer to promote abundant flowering rather than excessive foliage growth

Banana peel compost tea:Compost banana peels for 2–3 weeks to break down nutrients; steep in water for 24 hours, dilute 1:20 with water, and apply as a root drench to avoid leaf burn
Pruning
  • Pinch back stem tips in early spring to encourage bushy, compact growth
  • Deadhead spent flower clusters promptly to prolong the blooming period
  • Trim leggy or overgrown stems in late summer to maintain a neat shape
  • Remove yellowing or damaged leaves to improve airflow and reduce pest risk
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic; ingestion may cause vomiting, anorexia, depression, and skin irritation

Humans: Mild oral irritation and nausea if ingested; may cause skin rash in sensitive individuals

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Garden Uses & Culture

Culture: Symbolizes friendship and positive energy in Western floral traditions; its fragrant foliage is used in potpourri and sachets

Usage: Ornamental fragrant houseplant; diluted essential oils from foliage used in aromatherapy for stress relief