Hydrangea

Hydrangeas are popular deciduous shrubs known for their large, showy blooms and lush foliage. They bring bold colour and texture to the garden and are especially valued for their long-lasting flowers.

Key Characteristics

Flower Form: Large, rounded or cone-shaped clusters
Bloom Time: Summer through early fall
Height: Typically 1 m to 2 m, depending on the variety
Colours: White, pink, blue, and purple (some varieties change colour based on soil pH)
Foliage: Broad, rich green leaves

Growing Conditions

Hydrangeas thrive when planted in the right environment:

Sunlight: Full sun to partial shade (often prefer morning sun and afternoon shade)
Soil: Moist, well-drained soil rich in organic matter
Watering: Moderate to high; require consistent moisture
Maintenance: Pruning needs vary by variety

Hardiness

Hardiness depends on the type, but many hydrangeas are suitable for Zones 3–8. For Central Alberta gardens (Zones 3b–4a), cold-hardy varieties such as panicle and smooth hydrangeas tend to perform best.

Garden Uses

Hydrangeas are ideal for:

Feature shrubs
Foundation plantings
Mixed borders
Cut and dried flower arrangements

They provide bold structure and long-lasting seasonal colour in garden designs.

Benefits

Hydrangeas can attract:

Bees
Butterflies