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Hydrangea 'Double Dutch Alkmaar'

Hardy Shrub

What is Hardy Shrub?
Woody plant, usually having a permanent framework of branches.
Capable of withstanding outdoor winter temperatures down to -15C.

FROM £18.99

60% (2 Reviews)

Ideal for your patio pots or borders

Stunning double flowers on big 'mop head' blooms

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Height Up to 120cm (47in)
Spread Up to 120cm (47in)

Hardy Shrub

patiocottage gardenscut flower gardenspecimen plantwoodland garden

sun or semi shadedappled shade

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Description
Hydrangea 'Double Dutch Alkmaar' is one of the amazing double flowered varieties known as 'Double Dutch' Hydrangeas. With a stunning blue, mop headed flower, each with double florets, creating a densely packed bloom that is certain to draw your eye! Like all of its type, this Hydrangea will vary in colour intensity depending on the soil pH. Height: 120cm (47"). Spread: 120cm (47").

Plant height and spread is seasonal therefore we list by pot size rather than a defined plant size. The height and spread of the plant delivered will vary depending on the season, meaning arrival images are an indication only.

Show Codes

2 x 14cm Potted Plants (KC5091)

1 x 14cm Potted Plant (KA1038)

How to Grow
Hydrangeas prefers a position in shade or semi-shade, with shelter from cold, drying winds. Grow hydrangea plants in any rich fertile, moist soil. Improve the soil prior to planting by adding with plenty of well rotted manure or garden compost, ensuring that it is mixed in thoroughly and deeply. Alternatively, plant Hydrangea macrophylla in patio containers in ericaceous compost.
More Info
Leave the faded hydrangea flower heads in place until the new buds swell in spring to protect the delicate buds from frost damage. Prune the old stems after flowering, leaving the new growth in situ, as this Hydrangea flowers on new growth unlike most others. If necessary, Hydrangea paniculata will tolerate hard pruning of the oldest stems to a few buds from ground level. This will also encourage larger flower heads to be produced. After pruning hydrangeas, apply a mulch of well rotted manure or compost around the base of the plant. Caution: All parts of hydrangea will upset the stomach if eaten. The foliage may also aggravate skin allergies.
Caution

Caution: irritant to skin and eyes,harmful if eaten

Delivery

Seeds and garden supplies will normally be delivered within the time period stated against each product as detailed above. Plants, bulbs, corms, tubers, shrubs, trees, potatoes, etc. are delivered at the appropriate time for planting or potting on. Delivery times will be stated on the product page above, or in your order acknowledgement page and email.

Orders for packets of seed incur a delivery charge of £2.99.

Orders which include any other products will incur a delivery charge of £6.99.

Where an order includes both packets of seeds and other products, a maximum delivery charge of £7.99 will apply - regardless of the number of items ordered.

Large items may incur a higher delivery charge - this will be displayed in your shopping basket.

Please see our Delivery page for further details, and more information on different charges that may apply to certain destinations.

For more information on how we send your plants please visit our Helpful Guide on plant sizes.

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Hydrangea 'Double Dutch Alkmaar'

Hydrangea 'Double Dutch Alkmaar'

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