Hydrangea – varieties, symbolism and care
With their large, full flower clusters in white, pink, blue and purple, hydrangeas (Hydrangea) are among summer's most impressive flowers. They are equally popular in gardens as in bouquets – and have the fascinating property that the flower colour can be changed by the soil's pH value.
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Order flowers nowAbout the hydrangea
The hydrangea originally comes from Asia and North America, and is cultivated today all over the world. What makes the hydrangea truly special is that the flower colour – particularly in large-flowered varieties – is determined by the soil's acidity level (pH). Low pH gives aluminium salts that colour the flowers blue, while alkaline soil gives pink flowers from the exact same variety. The hydrangea thus functions as nature's own pH indicator.
What does the hydrangea symbolise?
- Gratitude and sincerity – a flower that expresses genuine feelings.
- Freedom of the heart – in Japan, the hydrangea symbolises sincere regret and apology.
- Abundance and prosperity – the lush flower clusters are associated with wealth and abundance.
- Blue hydrangea – can express coolness and distance, but also peace and harmony.
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View prices and selectionPopular hydrangea varieties
- Bigleaf hydrangea (H. macrophylla): The classic variety with rounded flower clusters. Available in pink, blue, white and purple.
- Smooth hydrangea (H. arborescens 'Annabelle'): Large white spheres – very popular in Irish gardens.
- Panicle hydrangea (H. paniculata): Cone-shaped flower clusters that gradually change from white to pink. Hardier than other varieties.
- Climbing hydrangea (H. anomala petiolaris): Climbs along walls and fences with white flowers.
How to care for hydrangeas in a vase
- Cut the stems at an angle and make a small cross-cut at the base for better water uptake.
- Remove all leaves – they use up water and cause the flowers to wilt faster.
- Hydrangeas drink enormous amounts of water, so top up every day.
- If the flower head begins to droop, you can dip the entire head in water for 20–30 minutes – this often works very well.
- Place the vase in a cool location and avoid direct sunlight and heat sources.
Quick facts – hydrangea
| Characteristic | Information |
|---|---|
| Vase life | 3–7 days |
| Latin name | Hydrangea |
| Flower colour is influenced by | Soil pH value |
| Blooming (garden) | July–September |
You can easily order flowers with hydrangeas delivered throughout Ireland. Read more about symbolism in our guide to flower language.
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