Maidenhair Tree (Ginkgo biloba)

Maidenhair Tree

Ginkgo biloba

Fan-shaped leaves turn gold in autumn, a living fossil of prehistoric forests. Deciduous tree; common name: ginkgo.

Full sun
1–2/week
Moderate
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Plant Needs

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Sunlight Full sun to partial shade; thrives in full sun for optimal autumn foliage color; tolerates urban pollution and compacted soil
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Watering Water deeply when the top 5–10 cm of soil is dry; mature trees are drought-tolerant once established
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Temperature Hardy to -20°C; tolerates summer heat up to 35°C; protect young saplings from prolonged frost exposure
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Characteristics

  • Leaf: Fan-shaped, bright green with dichotomous venation; turns vivid golden yellow in autumn
  • Flower: Male flowers are slender yellow catkins; female plants produce paired ovules that develop into fleshy, foul-smelling seeds
  • Stem/Bark: Mature trees have thick, furrowed gray-brown bark; saplings have smooth, light brown bark
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Care Guide

Watering

Water saplings deeply every 5–7 days; mature trees need occasional watering during extreme drought

Fertilization

Apply slow-release granular fertilizer once at bud break. Use a balanced, low-nitrogen fertilizer to support root and foliage growth

Banana peel compost tea:Compost banana peels for 2–3 weeks, dilute 1:20 with water for root drench; avoid applying raw peels to prevent pest infestations
Pruning
  • Remove dead, damaged, or crossing branches in late winter before new growth emerges
  • Thin crowded inner branches to improve airflow and light penetration
  • Shape young saplings in spring to encourage a strong, upright central leader
  • Avoid heavy pruning on mature trees, as they heal slowly and may develop unsightly scars
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic; seed ingestion can cause vomiting, diarrhea, abdominal pain, tremors, or seizures

Humans: Raw seeds contain ginkgotoxin; large ingestion may cause nausea, vomiting, or headache

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Garden Uses & Culture

Culture: Symbol of longevity, resilience, and peace in Chinese and Japanese cultural traditions; often planted in temple gardens

Usage: Ornamental urban tree for parks and streetscapes; extracts used in herbal supplements (not intended as medical advice)