Hydrangea

Hydrangea serrata 'Bluebird'

Hydrangea - Hydrangea serrata  'Bluebird'

Common Name: Hydrangea
Genus: Hydrangea
Species: serrata
Cultivar: 'Bluebird'

Category: Shrubs and Sub-shrubs
Growth Rate: Average
Features: Has colourful autumn foliage, Long flowering period

Hardiness: HardyHeight: 1.20 m (120 cm)
Sun/Shade: Full sun or Partial shadeSpread: 1.20 m (120 cm)

Foliage Type: DeciduousFlower Colour: Blue, Purple
Foliage Colour: Green, RedFlowering Period: June to September

Soil Type: Normal/Loam
Soil Moisture: Moist, but well drained

Flattened heads of beautiful blue mauve flowers last from June to September and in autumn the pointed mid-green leaves turn dusky red. On alkaline soils the flowers may become pink. This compact deciduous hydrangea is perfect for small gardens in sun or partial shade.

  • Garden care: Hydrangeas do not like to dry out. In dry weather soak the roots with a hose and the plant will usually recover. Remove faded flowerheads in spring after the danger of frosts cutting back the flowered stems to a strong pair of buds. Take out misplaced or diseased shoots. Mulch young plants with a well-rotted manure or compost in spring. Once established remove a quarter to a third of the shoots to the base of the plant.


    Hydrangeas give their best blue flowers on acidic soil of pH 5.5. When grown on neutral soil with a pH of 7 flowers will predominantly be pink although blue or mauve blooms can also be produced. To produce blue blooms make sure your soil is acidic with a pH of at most 6.5. To make a neutral soil acidic you can treat it annually with aluminium salts. However it's much harder to alter the pH of limey soil (alkaline) so it's easier to grow white or pink hydrangeas.


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