Hydrangea
Hydrangea macrophylla · Hydrangeaceae
Big summer flower heads with color-shifting hues.
Outdoor Plants · Shrubs · Flowers
Updated on 2026-07-17
Overview
Hydrangea is a shrub famed for globe flower heads whose color depends on soil pH.
How to grow it
Prefers cool part shade, wind shelter and steady moisture.
Watering
Generous in summer, never let it dry out.
Light
Part shade or morning sun.
Soil
Acidic for blue blooms, neutral for pink. Rich and draining.
Fertilizing
Ericaceous fertilizer in March and June.
Pruning
In late winter remove spent flowers and weak stems.
Repotting
Every 3 years into a larger pot.