Hydrangea macrophylla 'Altona' (blauw)
- Flower color
- Blue-UPOV Medium blue-RHS 101A
- Flower color
- Blue-UPOV Medium blue-RHS 101B
- Flower diameter
- 3,5 - 4 cm
- Flowering month(s)
- August
- Flowering month(s)
- July
- Flowering month(s)
- September
- Inflorescence
- Corymb
- Leaf duration
- Deciduous
- Leaf margin
- Serrate
- Leaf size
- 15 - 20 cm
- Leaf, general shape
- Elliptic / oval
- Leaf, general shape
- Oval / elliptic
- Leaf, main color
- Dark green
- Leaf, main color
- Green
- Light conditions
- Semi-shades
- Light conditions
- Sunny
- Moisture requirements
- Moist
- Moisture requirements
- Well-drained
- Plant height
- 90 - 100 cm
- Toxicity (if consumed)
- Not or barely
- Winter hardness
- Good (USDA-zone 5, 6)
- soil pH requirement
- Alkaline (pH > 7,5)
- soil pH requirement
- Neutral (pH 6,5 - 7,5)
- soil pH requirement
- Slightly acidic (pH 4,5 - 6,5)
- Cultivation
- simple
- Location
- the house is brightly lit, with partial shade in the open air
- Temperature
- optimal 15-20 °C
- Watering
- always keep the soil moist
- Flowering time
- in summer, when distilling – in March
- Height
- different
- Transplanting
- not performed
- Appearance maintenance
- remove faded parts
Market availability calendar
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