Japanese hydrangea vine
Hydrangea hydrangeoides · Hydrangeaceae
📷 阿橋 HQ · CC BY-SA 2.0
⚠️ Feuilles et bourgeons contiennent des glycosides cyanogènes ; chiens, chats et enfants risquent troubles digestifs à toxicité grave par ingestion.
The gardener's calendar
In autumn, ease off feeding and take the chance to clean up around japanese hydrangea vine and prepare for winter.
ID card
- Scientific name
- Hydrangea hydrangeoides
- Family
- Hydrangeaceae
- Origin
- Japan and East Asian regions
- Form
- Climbing or trailing shrub
- Mature height
- Up to 150 cm
- Foliage
- Deciduous
- Flowering
- June to August, delicate white lace-cap flowers
- Hardiness
- Good, tolerating temperate to cold winters
✓ Taxonomy verifiedSource: AI estimate · hardiness: reliability medium.
Expert tips
The key tip
Hydrangea hydrangeoides appreciates part shade, rich, moist but well-drained soil. Water regularly during growth.
The common mistake
Planting it in dry soil or full sun: it suffers, leaves scorch, flowering is weak.
The pro's trick
Mulch thickly (5-7 cm) in April to stabilize soil moisture and root temperature.
Care
Light exposure
Choose a location in partial light, with afternoon shade in warm regions. This climbing hydrangea appreciates a spot sheltered from drying winds and tolerates partial shade. A north or east-facing position is ideal to maintain foliage moisture and promote beautiful flowering.
Watering
Keep the soil regularly moist, especially during active growth and flowering. Water deeply one to two times per week depending on weather conditions, avoiding complete drying out. During winter, reduce watering but don't let the soil dry out entirely.
Soil
Provide rich, well-draining soil that is slightly acidic and enriched with organic matter. Apply a layer of mulch at the base to retain moisture and regulate temperature. Avoid chalky soils which can limit nutrient uptake.
Pruning and training
Prune lightly after flowering to remove dead branches and maintain a harmonious shape. Guide the stems onto a support or trellis to encourage climbing growth. Clear old wood in late winter, before spring growth resumes.
Fertilizing
Apply balanced fertilizer in spring as growth begins. During active growth, you can enrich monthly with fertilizer formulated for flowering shrubs. Reduce or stop applications in autumn and winter.
Diseases and pests
Watch for powdery mildew and rust if there's excessive humidity without sufficient air circulation. Red spider mites can colonize the plant during hot, dry periods; increase foliage humidity by misting. Ensure good air circulation and remove diseased leaves to prevent spread.
Did you know?
Hydrangea hydrangeoides is one of the truly climbing hydrangeas, capable of gripping a support through aerial rootlets, allowing it to colonize walls, rocks, and tree trunks. Its delicate white lace-cap flower clusters have been the subject of traditional ornamental cultivation in Japan for centuries, prized for their delicacy and summer flowering.
Where to buy it
Best planted in autumn so the roots settle in before summer, or in early spring once the frost has passed. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, October, November.
Add this plant to my garden →Plants from the same family
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Tips generated and checked by Viridia — adapt them to your local climate.