Hydrangea macrophylla
Bigleaf Hydrangea
Bigleaf hydrangeas drive huge summer search traffic for blue vs pink color chemistry, pruning mistakes, and wilting care.
View GalleryCare Overview
Light
Part sun
Morning sun + afternoon shade prevents leaf scorch.
Water
Consistent
Wilting in heat is common — deep water, mulch well.
Temperature
Mild
Flower buds can freeze in late cold snaps (US zones).
Humidity
Moderate–high
Appreciates humid air; mist rarely needed outdoors.
Soil
Moist loam
Organic, well-drained soil; adjust pH for color goals.
Pet Safe
Toxic
Contains compounds that can sicken pets if eaten.
Detailed Care Instructions
Light & water
Avoid hot western exposures. Mulch to hold moisture during summer heat waves.
Color
Acidic soils favor blue (with aluminum available); alkaline soils favor pink. White types stay white.
Pruning
Many mopheads bloom on old wood — prune lightly after flowering, not hard in spring.
Winter
Protect buds in cold zones with wraps or plant reblooming cultivars.
