Hydrangea
Hydrangea macrophylla
flowerHydrangeas produce spectacular large flower heads in pink, blue, purple, or white. Soil pH determines flower colour — acidic soil produces blue flowers, alkaline soil produces pink.
Common Problems
Select the problem your Hydrangea is experiencing to get a treatment guide.
Care Guide
Toxicity
All parts toxic if ingested. Contains cyanogenic glycosides.
Common Diseases
Common Pests
Seasonal Care
Leave faded flower heads on the plant over winter for frost protection of the buds beneath.
Feed as new growth appears; protect emerging buds from late frosts, which can ruin flowering.
Water deeply and regularly — hydrangeas wilt quickly in heat; deadhead as blooms fade.
Avoid pruning mophead varieties in winter, as this removes next year's flower buds; mulch roots.
Similar Plants
Frequently Asked Questions
Why isn't my hydrangea flowering?
Usually pruning at the wrong time, removing flower buds set the previous year. Prune only after flowering.