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Special Offers

ONLY £2.99 with every order!

1 x 9cm potted clematis plant ONLY £5.99 with orders over £80

1 x 9cm potted buddleja plant ONLY £4.99 with orders over £39

Hydrangea macrophylla GLAM ROCK 'Horwack'Hydrangea macrophylla SCHLOSS WACKERBARTH 'Horwack'

5 Options from £5.99

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

Flowers constantly change colours

Grow the most colourful hydrangea ever!

Winner of Best New Plant Variety in the 'Hardy Nursery Stock' category at The Grower of the Year Awards 2014

1 x 9cm potted hydrangea plantSave £4.00 £9.99 £5.99 Despatch: by end of August 2019
2 x 9cm potted hydrangea plantsSave £9.99 £19.98 £9.99 Despatch: by end of August 2019
4 x 9cm potted hydrangea plants Save £19.98 £39.96 £19.98 Despatch: by end of August 2019
Hydrangea Patio Saver Collection (1 x 9cm potted plant, 1 patio pot, 25 litres incredicompost®) Save £11.97 £28.97 £17.00 Despatch: by end of August 2019
Hydrangea 'Glam Rock' Pot Collection (2 x 9cm potted plants, 2 patio pots, 25 litres incredicompost®) £47.95 Despatch: by end of September 2019
Please note: This product cannot be delivered outside the United Kingdom.
Description How to Grow More Info Delivery Reviews Video

This stunning variety is one of the most eye catching hydrangeas available. The rounded flower heads are formed by dozens of red florets with blue centres, each petal tipped with an extraordinary shade of lime green. Found as a chance seedling, this incredible variety is repeat flowering producing a second flush of flowers later in the season.

As with many varieties, Hydrangea macrophylla 'Glam Rock' produces widely different colour tones depending on the soil pH. If the soil is neutral to alkaline (a pH of 7 to 14) then flowers will be more pink-red-green. In acid soils (pH less than 7) the flowers will tend to be more purple-blue-green in their colouration, with blooms being bluer, the lower the pH gets.

In addition to this, Hydrangeas are well known for their flowers changing colour as the season progresses. These colour changes can be quite dramatic from bud break to mature bloom. This robust, hardy shrub makes a superb addition to borders or large patio containers. Height and spread: 120cm (48").

Useful links:

How to grow hydrangeas

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.


Patio, Cottage Gardens, Cut Flower Garden, Specimen Plant, Woodland Garden

Hardy

Sun or semi shade

Up to 120cm (47.2in)

Up to 120cm (47.2in)

Easy for all

Easy for all

Thompson & Morgan strives to ensure that all its plants are delivered to you in the perfect condition for planting. Sadly, the time it takes to deliver to certain locations in the UK means that we can't guarantee this, so regretfully we are unable to ship live plants to the following areas: HS, IV41-IV49, IV51, IV55-56, KW15-KW17, PA34, PA41-48, PA60-PA78, PA80, PH40-PH44, TR21-TR24, ZE1-ZE3

1 x 9cm potted hydrangea plant (10121)
2 x 9cm potted hydrangea plants (10122)
4 x 9cm potted hydrangea plants (T62496P)
Hydrangea Patio Saver Collection (1 x 9cm potted plant, 1 patio pot, 25 litres incredicompost®) (KB1937)
Hydrangea 'Glam Rock' Pot Collection (2 x 9cm potted plants, 2 patio pots, 25 litres incredicompost) (TKA7396P)

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Flowering Months
Water regularly until plants are fully established. Leave the faded hydrangea flower heads in place until the new buds swell in spring to protect the delicate buds from frost damage. Prune after flowering, reducing the stems to restrict their growth to the available space and to improve the shape of the plant. After pruning hydrangeas, apply a mulch of well rotted manure or compost around the base of the plant. Caution: Contact with hydrangea foliage may irritate the skin and eyes and all parts are harmful if eaten.
Hydrangea macrophylla prefers a sunny or semi shaded position, 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 soil based compost such as John Innes No. 3.

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 £1.95.

Orders which include any other products will incur a delivery charge of £4.95.

Where an order includes both packets of seeds and other products, a maximum delivery charge of £6.90 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.

Satisfaction Guaranteed

For your complete peace of mind, our Home and Garden products may be returned to us within 30 days of purchase for a refund of the purchase price. Items must be returned unused, at your cost and in mint condition. All items carry a manufacturer's 12 month defects warranty.

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