Hydrangea macrophylla
The mop-head and lacecaps of today descend from plants native to a small area in eastern Japan. They are long lived plants, easy to grow, thriving in shade, woodland gardens and near the coast, whilst they also thrive in shady spots. Their flowers range through green, white, pink, blue, red and purple. The flowers give a fine display from June until November. The traditional Hortensias (H. macrophylla), have two basic types of flowerheads.
LACECAPS are usually flat with small flowers without petals in the centre and showy flowers with petals on the outside.
MOP-HEADS have a ball of flowers at the end of the stems of the current seasons growth.
The Flower colour of Hydrangea macrophylla will vary with soil type and most will form round bushes between 1m and 3m tall.
The flowers of the pink Hydrangea macrophylla varieties will usually go blue in acid soils, but stay pink in alkaline soils. Blue flowers will only remain blue if the soil is acid and there is sufficient Aluminium Sulphate in the compost or soil, if the soil is alkaline the flowers will be pink. White varieties do not change colour with the soil.
If the variety has blue or pink in its name this does not mean that the flowers will come out that colour.
The technical explanation - the blue colour of Hydrangea macrophylla flowers is determined by the presence of an Anthrocynin Delphinidin 3 - Monoglucoside. The blue colour is caused by the binding of Aluminium Sulphate with the Anthrocynin. This happens under acid soil conditions.
*Please note the white and pale coloured flowered varieties will often burn if grown in full sun.
Pruning Hydrangea macrophylla varieties.
Remove dead heads in spring (late March/early April), and thin out weak and dead stems. You can thin the brown stems to get larger flowers. Do not prune in the autumn as the old flowers give some frost protection to young shoots in early spring. The brown flower heads also look great in winter when covered in frost. If you need to shorten the plant always cut above a bud.
*Please note any hydrangeas with no add to cart button unless otherwise stated are currently out of stock or are only available in limited numbers. Please contact us to check availability 01622 833218 thank you.
Medium Hydrangea with lilac-pink Mop head flowers in Summer.
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Large tight pale pink mop head flowers on strong stems in summer remaining decorative until autumn.
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Large tight pale pink mop head flowers on strong stems in summer remaining decorative until autumn.
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Flat bright lace-cap blue flowers on long stems.
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Deep bluer than blue mop head flowers in summer. Needs aluminium sulphate to attain intense colour.
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Mop head with white flowers fading to dark green and a red border on each petal.
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A mop head hydrangea with creamy to pure white flowers in summer.
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A mop head with unusual wavy edge intensive blue purple flowers.
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A compact variety with curly pink mop-head flowers.
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Lace-cap Hydrangea has fully double white sterile flowers.
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Mop head hydrangea with long lasting very deep dark purple flowers.
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Beautiful large double pink mop head flowers in summer.
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Double pink lace cap flowers from late spring to early autumn.
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A compact variety with large intense pink mop head flowers in summer.
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'Pink Fireworks' parent to Hanabi 'Fireworks' with large flat soft double pink star shaped flowers in summer.
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A compact variety with beautiful single blue mop head flowers in summer.
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Pink or blue lace-cap flowers in summer.
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A compact variety with double light blue lace cap flowers in summer.
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A compact variety with double light rose lace cap flowers edged pink in summer.
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A vigorous growing variety with double blue lace cap flowers in summer.
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A compact variety with double light blue mop head flowers in summer.
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A lace cap hydrangea with double white flowers in summer.
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A strong sturdy variety with double light blue lace cap flowers in summer.
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A strong sturdy variety with double light rose pink lace cap flowers in summer.
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A compact variety with dense double light blue mop head flowers in summer.
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A lace cap hydrangea with double rose pink flowers in summer.
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Flat lace-cap fuchsia pink toned flowers with fringed edges.
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Very large intensive pink coloured lace cap flowers in summer.
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Dense deep rich rose red mop head flowers in summer and green leaves usually with red tinted edges.
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Soft green mop head flowers changing to darker shades of green as the season continues. Good for cut flowers.
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Large green flowers turn dark red from the outer edge of the petals
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Small flowers are pink on alkaline soil and varying shades of blue to deep purple on acid soils.
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Small flowers are pink on alkaline soil and varying shades of blue to deep purple on acid soils.
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Mop head with pink flowers in summer turning to a dark pink red.
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Mop head with red purple blue flowers in summer turning a dark red purple blue.
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