To care for hydrangeas effectively, follow these key guidelines:
Watering
- Water hydrangeas regularly to keep the soil consistently moist, especially during hot, dry spells. Newly planted hydrangeas need watering every 1-2 days, while established plants benefit from deep watering once or twice a week
- Use rainwater if possible, which can help maintain blue flower color in some hydrangea types
- Avoid soggy soil by ensuring good drainage; water deeply rather than lightly to reach the roots
Soil and Planting
- Plant hydrangeas in well-draining, fertile, humus-rich soil amended with compost or organic matter
- The soil pH affects flower color: acidic soil (pH ≤ 6) encourages blue flowers, while neutral to alkaline soil (pH ≥ 7) promotes pink flowers
- Plant in late spring or early fall to allow roots to establish before extreme temperatures
Light
- Hydrangeas thrive in partial shade with morning sun and afternoon shade, especially in hot climates. Some varieties tolerate full sun but may need extra watering
Fertilizing
- Apply a balanced, slow-release fertilizer once in spring, and for some types, again in late summer. Avoid high-nitrogen fertilizers that promote leaf growth over flowers
- Avoid fertilizing in late summer or fall to prevent tender new growth vulnerable to frost
Pruning
- Prune hydrangeas according to species and blooming habits: most are pruned in late winter or early spring, while climbing hydrangeas are pruned after flowering in summer
- Remove dead or damaged stems and shape the plant as needed to encourage healthy growth and blooms
Mulching and Winter Care
- Mulch annually in spring with leaf mold, compost, or well-rotted manure to retain moisture and improve soil
- In colder climates, protect hydrangeas in winter by applying mulch around the base and wrapping tender varieties with burlap or frost blankets
Potted Hydrangeas
- Use a large pot with good drainage and peat-free ericaceous compost for acid-loving types
- Water potted hydrangeas frequently as container soil dries out faster, sometimes daily during hot weather
- Fertilize sparingly with slow-release fertilizer in spring and possibly late spring for reblooming types
- Prune to maintain shape and size appropriate for containers
By following these care practices-consistent watering, proper soil and light conditions, timely fertilizing and pruning, mulching, and winter protection- your hydrangeas will flourish and produce vibrant blooms year after year.
