Hydrangea
Hydrangea Detailed Encyclopedia Introduction
Hydrangeas are flowering shrubs with large, colorful flower clusters that can change color based on soil pH, perfect for garden displays.
Basic Info
Family：Hydrangeaceae
Scientific Name：Hydrangea
Origin：East Asia
Flowering Period：Summer
Height：60-150 cm
Lifespan：Perennial
Morphology
Leaves：Large serrated leaves
Flowers：Large spherical flower clusters in various colors
Roots：Shallow fibrous root system
Stem：Shrubby stems
Growth Habits
Soil Requirements：Moist, well-drained, fertile soil. pH affects flower color
Watering Needs：Keep soil consistently moist, especially in hot weather
Light Requirements：Partial shade (morning sun, afternoon shade)
Temperature Requirements：18-25°C
Classification & Varieties
Main Classifications
Ornamental Varieties
Professional Care
✂️ Pruning Management
Pruning Timing：Late winter/early spring for most varieties
Pruning Method：Remove old wood, shape as needed
Pruning Purpose：Encourage new growth and flowering
Required Tools：Pruning shears, loppers
🛡️ Pest & Disease Management
Common Pests：
Common Diseases：
Prevention Measures：Good air circulation, avoid overhead watering
Treatment Methods：Remove infected leaves, improve ventilation
🌱 Fertilization Management
Fertilizer Type：Acidic fertilizer
Fertilization Frequency：Twice yearly
Fertilization Timing：Spring and early summer
Fertilization Amount：Moderate application
💧 Water Requirements
Watering Frequency：Keep soil moist, daily watering in hot weather
Watering Amount：Deep watering
Watering Method：Water at base, avoid wetting foliage
Dehydration Signs：Wilted leaves, drooping flowers
Basic Care Tips
- •Mulch around base to retain soil moisture
- •Prune in late winter or early spring depending on variety
- •Adjust soil pH to influence flower color (for some varieties)
- •Keep soil consistently moist, water daily in hot weather
- •Protect from strong afternoon sun
Ecology Value
Pollinators：Bees, butterflies
Wildlife：Attracts pollinators, provides shelter
Environmental Value：Garden focal point, shade tolerant
Cultural Symbolism
Symbolic Meaning：Gratitude, heartfelt emotions, understanding
Historical Background：Native to Asia, popular in Victorian gardens
Related Festivals：Hydrangea festivals in Japan
Artistic Expression：Featured in Japanese art and gardens