Floral Friday: Hydrangea

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Hydrangeas are popular garden shrubs with delicate heads of flowers in shades of pink, white, purple or blue.

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Hydrangeas thrive in a moist, but well-drained soil, in a cool, semi-shady part of the garden. Try to avoid exposed east-facing sites, where cold winds may damage young spring growth, and also avoid dry, sunny spots.

Hydrangea Blue Wave
Hydrangea Blue Wave

One of the most interesting things of some hydrangeas is the ability of the flowers to change colour. This colour change is due to the soil pH which affects aluminium availability. Those with blue or pink flowers tend to be blue in acid soil conditions (high available aluminium levels), mauve in acid to neutral soil conditions, and pink in alkaline conditions. IMG_1808

White flowers, and also green-flowered cultivars, remain white or green regardless of soil pH.IMG_1807

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21 thoughts on “Floral Friday: Hydrangea

  1. Beautiful hydrangeas Aletta. I only have the one now in a large pot which has been grown from a cutting of a bush that came from a cutting from my father over thirty years ago! When it flowers I always think of him.
    Jude xx

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