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Hydrangea paniculata Groundbreaker

Hydrangea paniculata Groundbreaker® ('LC N021'PBR) EU 20232055
Panicled Hydrangea, Peegee Hydrangea

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A particularly small variety, ideal for borders or pots. Its conical panicles are white and in various shades of soft pink depending on their maturity. Cut them to make beautiful bouquets or use the entire plant as a centrepiece. Planted en masse, it creates magnificently flowered borders throughout the summer.
Flower size
10 cm
Height at maturity
1 m
Spread at maturity
1.20 m
Exposure
Sun, Partial shade
Hardiness
Hardy down to -29°C
Soil moisture
Moist soil
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Best planting time March, October
Recommended planting time February to May, September to November
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Flowering time July to October
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Description

Hydrangea paniculata Groundbreaker is a dwarf and very compact paniculate hydrangea. As a small ground cover, it is the first variety that does not exceed 40 cm in all directions! It is therefore ideal for borders, in pots and even as a centrepiece. From July to October, it produces white, conical inflorescences which mature to different shades of soft pink. Plant this robust hydrangea in moist, well-drained and humus-rich soil, in full sun or partial shade.

Hydrangea paniculata, also known as Mountain Hydrangea, is a species belonging to the hydrangea family native to deciduous forests in China and Japan and particularly hardy. The Groundbreaker variety has a dense and very compact habit. The main branches are erect, while the secondary branches are slightly arched. At maturity, this variety does not exceed 40 to 50 cm in all directions, with fairly rapid growth. In July, it blooms on the current year's branches with small, loose, very light-looking panicles. They consist mainly of fertile, single florets, evolving from a white hue to shades of soft pink in autumn, in sunny exposure. This gracefully curved inflorescence adorns the younger branches. It has well-branched vegetation, with branches covered in ovate and fairly light green leaves, measuring 5 to 10 cm long and 4 to 6 cm wide. They turn yellow in autumn before falling. Paniculate hydrangeas are less sensitive to late frosts as they generally bloom on the current year's growth.

Hydrangea paniculata distinguishes itself from its cousin, Hydrangea macrophylla, by its good tolerance to sun, sea spray, and relative drought. Planted in any good garden soil, preferably without too much limestone, Groundbreaker shows rapid growth. It is a very hardy variety that can be planted as a border, in mass plantings, or mixed with other plants, as well as in flower beds or pots. Cut its inflorescences to create beautiful bouquets. Pair it with small roses, heathers, and Deutzias, or low grasses like Stipa. On the terrace or balcony, it can live for many years with some fertiliser and regular watering.

Hydrangea paniculata Groundbreaker in pictures

Hydrangea paniculata Groundbreaker (Flowering) Flowering
Hydrangea paniculata Groundbreaker (Plant habit) Plant habit

Plant habit

Height at maturity 1 m
Spread at maturity 1.20 m
Habit Irregular, bushy
Growth rate fast

Flowering

Flower colour white
Flowering time July to October
Inflorescence Panicle
Flower size 10 cm
Good for cut flowers Cut flower blooms

Foliage

Foliage persistence Deciduous
Foliage colour green

Botanical data

Genus

Hydrangea

Species

paniculata

Cultivar

Groundbreaker® ('LC N021'PBR) EU 20232055

Family

Hydrangeaceae

Other common names

Panicled Hydrangea, Peegee Hydrangea

Origin

Cultivar or hybrid

Planting and care

Hydrangea paniculata Groundbreaker is undemanding on the nature of the soil, as long as it is not too heavy and not too chalky. It needs a sunny, non-burning exposure, or semi-shade. Plant it in deeply worked soil. A good base fertiliser (horn or dehydrated blood) will promote the recovery of your plant and nourish it without risk of burning. If your soil tends to be dry, mix our water retainer, stockosorb, with the soil, by filling the planting hole and provide a watering basin on the surface.

At the end of summer, we advise you not to cut the dry panicles that will protect the terminal shoots of the branches in winter, instead cut all the dry flowers at the end of February or in the first warm days. Their vegetation in spring is quite late.

Hydrangea Paniculata: These shrubby hydrangeas with elongated inflorescences are more drought-resistant and easily establish themselves even in non-acidic soil. They bloom generously from June until the frost. Planted in the sun, their inflorescences colour in autumn.

Hydrangea paniculata should be pruned at the end of winter to produce more inflorescences and maintain a dense habit. Except when limiting the size of a bush that has become too large, care should be taken not to remove the 2-year-old branches, which would compromise the plant's development.

Planting period

Best planting time March, October
Recommended planting time February to May, September to November

Intended location

Suitable for Meadow, Woodland edge
Type of use Border, Edge of border, Container
Hardiness Hardy down to -29°C (USDA zone 5) Show map
Ease of cultivation Beginner
Planting density 1 per m2
Exposure Sun, Partial shade
Soil pH Any
Soil type Clayey (heavy), Clayey-chalky (heavy and alkaline), Silty-loamy (rich and light)
Soil moisture Moist soil, Ordinary, loose, fertile soil.

Care

Pruning instructions Hydrangea paniculata should be pruned in late winter to produce more inflorescences and maintain a dense habit. Except for when limiting the expansion of the bush that has become too large, care should be taken not to remove the two-year-old branches, as this would compromise the development of the young plant.
Pruning Pruning recommended once a year
Pruning time March
Soil moisture Moist soil
Disease resistance Very good
Overwinter Can be left in the ground

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