Hydrangea
Hydrangeaceae BUSH OUTDOOR Placement

Hydrangea

Hydrangea macrophylla

Identified By Unknown Guest

Hydrangeas are popular deciduous shrubs known for their large, showy flower heads that can change color depending on the soil pH. They thrive in temperate regions and make stunning additions to gardens and floral arrangements.

Also known as: Hortensia French Hydrangea Bigleaf Hydrangea

Safety Warnings

Toxic to Pets: Contains cyanogenic glycosides which can cause vomiting, diarrhea, and lethargy if ingested by pets.
Toxic to Humans: Ingestion of leaves or flowers can cause stomach pain, vomiting, weakness, and sweating due to cyanogenic glycosides.
Pregnancy Risk: Due to potential toxicity and lack of clinical safety data, consumption should be strictly avoided during pregnancy.

Growth & Dimensions

Height 90 - 300 cm
Width 90 - 300 cm
Growth Rate Moderate
Care Level Moderate
Lifespan Perennial

Ideal Environment

Temperature -15°C - 30°C
Sunlight Hours 3 - 6 hrs/day
Sun Exposure Partial shade
Soil pH 5 - 7
Watering Interval 3 - 7 days
Humidity 50.00% - 80.00%
USDA Zone 3 - 9

Temperate Climates

Climate: Mild summers and cool winters with moderate rainfall.

Soils: Loam Clay Silt
Annual Rainfall: 750 - 1500 mm

Native Regions

North America
Eastern Asia
Japan (JP – Asia)
China (CN – Asia)

Care Guide

Watering

Keep the soil consistently moist. Hydrangeas need about 2.5 cm of water per week. Water deeply at the base to encourage deep root growth.

Sunlight

Plant in an area that receives morning sun and afternoon shade to protect the blooms from scorching.

Soil and Fertilizer

Provide rich, well-draining organic soil. Apply a balanced slow-release fertilizer in early spring.

Pruning

Prune immediately after flowering in late summer for old-wood bloomers, or in early spring for new-wood varieties.

Propagation Methods

Cutting

Take 10-15 cm stem cuttings in summer from non-flowering shoots, dip in rooting hormone, and plant in a moist potting mix.

Common Diseases & Pests

Powdery Mildew

Fungal
Symptoms:

White powdery spots on leaves and stems, leading to distorted foliage.

Treatment:

Apply fungicidal sprays or neem oil. Ensure proper air circulation.

Prevention:

Water at the base of the plant to keep foliage dry and space plants adequately.

Cercospora Leaf Spot

Fungal
Symptoms:

Small purple or brown spots on leaves that enlarge and develop light centers.

Treatment:

Remove infected leaves and apply a copper-based fungicide.

Prevention:

Avoid overhead watering and clean up fallen leaves in autumn.

OTHER PLANTS

Japanese Spindle

Japanese Spindle

Euonymus japonicus, commonly known as Japanese spindle, is a species of flowering plant in the family Celastraceae, native to Japan, Korea, and China. It is a dense, evergreen shrub widely used for hedges and ornamental landscaping due to its glossy foliage.

Clivia

Clivia

Clivia miniata is a popular evergreen perennial plant known for its striking, dark green strap-like leaves and vibrant clusters of orange, red, or yellow trumpet-shaped flowers. It thrives indoors in indirect light and requires minimal care.

Gardenia

Gardenia

Gardenia is a genus of flowering plants in the coffee family, Rubiaceae, native to the tropical and subtropical regions of Africa, Asia, and the Pacific Islands. They are well known for their strong, sweet scent and glossy green leaves.

Sycamore Maple

Sycamore Maple

Acer pseudoplatanus, commonly known as the sycamore maple, is a large deciduous tree native to central Europe and southwestern Asia. It is widely planted in parks and gardens for its dense foliage and imposing size.

European Elder

European Elder

Sambucus nigra is a species of flowering plant in the family Adoxaceae, native to most of Europe and North America. It is a large deciduous shrub or small tree bearing clusters of white flowers followed by small black or blue-black berries.

Majestic Palm

Majestic Palm

The Majestic Palm is a popular indoor and outdoor palm featuring graceful, arching fronds and a smooth trunk. Native to Madagascar, it thrives in high humidity and moist, well-draining soil.

Kentia Palm

Kentia Palm

The Kentia Palm is a popular, elegant indoor and outdoor palm known for its graceful, drooping dark green fronds. It is exceptionally hardy, adaptable to low light levels, and makes a stunning architectural statement.

Flaming Katy

Flaming Katy

Kalanchoe blossfeldiana is a popular, easy-to-care-for succulent houseplant known for its dark green, scalloped leaves and clusters of long-lasting colorful flowers.

Swedish Ivy

Swedish Ivy

Swedish Ivy is a popular indoor trailing houseplant known for its glossy, scalloped green leaves and vigorous growth habit. Despite its common name, it is native to Southeast Africa rather than Sweden.

Persian Cyclamen

Persian Cyclamen

Cyclamen persicum is a popular flowering perennial known for its distinctive swept-back petals and beautifully patterned, heart-shaped leaves. It thrives in cooler indoor environments and blooms during the winter and spring months.

Chinese Money Plant

Chinese Money Plant

Pilea peperomioides, commonly known as the Chinese money plant, is a popular indoor houseplant known for its distinct flat, round, peltate green leaves on long petioles. It is easy to care for and propagates readily.

Garden Pink

Garden Pink

Dianthus is a popular genus of flowering plants known for their vibrant, often fringed petals and charming spicy fragrance reminiscent of cloves. They are hardy garden favorites that thrive in sunny locations and well-drained soil.

Hoary Stock

Hoary Stock

Matthiola incana, commonly known as hoary stock or simply stock, is a popular garden flower known for its vibrant, intensely fragrant blossoms that bloom in shades of pink, purple, red, white, and yellow.

Weigela

Weigela

Weigela is a genus of deciduous shrubs belonging to the honeysuckle family, Caprifoliaceae. They are known for their trumpet-shaped pink, red, or white flowers that bloom profusely in spring and early summer, attracting hummingbirds and butterflies.

Rhododendron

Rhododendron

Rhododendrons are renowned for their spectacular blooms of trumpet-shaped flowers and glossy, leathery green leaves. They thrive in acidic, well-draining soils and partial shade.

ZZ Plant

ZZ Plant

Zamioculcas zamiifolia, commonly known as the ZZ plant, is a tropical perennial plant native to eastern Africa, known for its shiny, dark green leaves and exceptional tolerance to neglect and low-light conditions.

Wandering Jew

Wandering Jew

Tradescantia zebrina is a species of plant in the commelina family native to Mexico. It is widely grown as a houseplant and popular for its trailing stems and attractive striped leaves.

Cockscomb

Cockscomb

Celosia cristata, commonly known as cockscomb, is a fascinating annual plant famous for its brightly colored, velvety flower heads that resemble a rooster's comb or a brain. They thrive in warm weather and add a striking splash of color to gardens and floral arrangements.

Barbados Gooseberry

Barbados Gooseberry

Pereskia aculeata, commonly known as the Barbados gooseberry or lemon vine, is a unique leafy cactus species that grows as a scrambling vine or shrub. Unlike most cacti, it possesses true leaves and produces edible fruits.

Japanese Maple

Japanese Maple

Acer palmatum is a species of woody plant native to Japan, Korea, China, eastern Mongolia, and southeast Russia. Many different cultivars of this maple have been selected and are grown worldwide for their large variety of attractive shapes, colors, and sizes.

Victorian Box

Victorian Box

Pittosporum undulatum is a small to medium-sized tree native to eastern Australia, widely cultivated for its glossy evergreen foliage and sweetly scented white flowers.

Kaffir Lime

Kaffir Lime

Kaffir Lime is a tropical fruit tree native to tropical Asia, widely known for its distinct double-lobed leaves and intensely aromatic zest and leaves used in Southeast Asian cuisine.

Chinese Evergreen

Chinese Evergreen

Aglaonema 'Pink Siam' is a stunning tropical foliage plant known for its vibrant pink and green leaves. It is exceptionally popular as an indoor houseplant due to its beauty and ease of care.

Echeveria

Echeveria

Echeveria is a large genus of flowering plants in the family Crassulaceae, native to semi-desert areas of Central America, Mexico, and northwestern South America. They are popular ornamental container plants known for their rosette-forming succulent leaves.