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Hydrangea macrophylla Star Gazer

Hydrangea macrophylla Stargazer® 'Kompeito'
Bigleaf Hydrangea, French Hydrangea, Lacecap Hydrangea

4,7/5
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Beautiful flowers that last until mid-November, even in Belgium!

Marc N., 20/11/2024

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This plant carries a 24 months recovery warranty

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Value-for-money
This lovely hydrangea has become very popular due to its compact and bushy growth habit, flat flower head, and beautiful porcelain shades. The sterile florets have three rows of diaphanous pink petals or lavender blue, bordered in white, around a bouquet of pink or blue florets, depending on the nature of the soil. The plant's thick, glossy green foliage and small size make it an excellent choice for pots and Japanese-style flower beds. The plant is easy to care for and perfect for adding a touch of beauty to any garden.
Flower size
10 cm
Height at maturity
1.10 m
Spread at maturity
1.10 m
Exposure
Sun, Partial shade
Hardiness
Hardy down to -23°C
Soil moisture
Moist soil
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Best planting time April to May, September to October
Recommended planting time February to April, August to October
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Flowering time June to July, September to October
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Description

The Hydrangea macrophylla 'Star Gazer' is a beautiful novelty, offering compact, bushy vegetation with flat flower heads with porcelain hues. The sterile florets have a triple rank of diaphanous pink petals, or lavender blue, bordered by white, around a bouquet of pink or blue florets, depending on the nature of the soil. Its thick, flawless, glossy green foliage and small size make it an excellent subject for pots and Japanese-style flower beds in semi-shade and non-limestone soil.

 

Hydrangea macrophylla 'Star Gazer' is one of the many hybrids obtained by cross-breeding the species H. macrophylla and H. aspera, among others. All these plants belong to the Hydrangeaceae family, native to China and Japan. 'Star Gazer' is part of a series of cultivars selected for their hardiness and ability to flower on the year's wood in autumn and on one-year-old shoots in early summer. This bush shows a compact habit, as wide as it is high, 1.10 m (3 ft 7 in) in all directions. From June to September to October, these small fertile and sterile flowers, with striking dimorphism, form very light flat flower heads. They comprise triple sterile bicolour florets, whose hue varies depending on the soil. They surround a head of fertile florets in the shape of buttons in a matching colour. These small triple florets, as if hand-painted, are bordered by white but progressively in a highly subtle gradient. The flowers then fade to beige or light brown, in a texture reminiscent of paper. This variety will be more floriferous if care is taken to regularly remove faded flowers. The flowering is accompanied by dark green, shiny, thick, deciduous leaves. The leaves are opposite; they reach a minimum of ten centimetres in length. They are single, ovate to elliptical, ending in a pointed tip, saw-toothed. Hydrangeas can live at least 50 years.

 

The Kompeito Stargazer Hortensia has excellent hardiness. Hydrangeas are well known for brightening the north side of houses. This variety will thrive in an east or west exposure that is not burning in flower beds and hedges. This variety is particularly suitable for container cultivation, which can be positioned on the terrace or near the entrance. Even if these plants are not fond of limestone, they are not strictly ericaceous plants. Combine them with fuchsias magellanica, annual impatiens, or plant spring-flowering bulbs in front of their round silhouette. Enjoy their sumptuous and long-lasting flowering in the garden or the house.

 

Hydrangea macrophylla flowers come in different colours based on the soil pH level they are planted in. Blue flowers turn pink in neutral or alkaline soil. Add aluminium sulphate (found in slate) or alum stone to the soil every spring to keep the blue colour. You can also mix ericaceous compost with garden soil. This will help to maintain the blue colour.

Hydrangea macrophylla Star Gazer in pictures

Hydrangea macrophylla Star Gazer (Flowering) Flowering
Hydrangea macrophylla Star Gazer (Foliage) Foliage

Plant habit

Height at maturity 1.10 m
Spread at maturity 1.10 m
Habit Irregular, bushy
Growth rate normal

Flowering

Flower colour pink
Flowering time June to July, September to October
Inflorescence Cyme
Flower size 10 cm
Good for cut flowers Cut flower blooms

Foliage

Foliage persistence Deciduous
Foliage colour dark green

Botanical data

Genus

Hydrangea

Species

macrophylla

Cultivar

Stargazer® 'Kompeito'

Family

Hydrangeaceae

Other common names

Bigleaf Hydrangea, French Hydrangea, Lacecap Hydrangea

Origin

Cultivar or hybrid

Product reference5540021

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Planting and care

To plant the hydrangea macrophylla 'Star Gazer', choose a slightly shaded spot in spring or early autumn, such as against an east-facing or northern wall. Keep it away from cold winds and the sun. It prefers deep, fresh, well-drained, and relatively fertile soil, but ericaceous soil is unnecessary. You can enrich the soil with a good base fertiliser before planting. If the soil is dry at the foot of the wall, plant the root ball at least 30-40 cm (11.8-15.7 in) away from the base and add well-rotted compost to improve soil freshness. This plant is resilient and can be planted in cold areas. When pruning, remove the faded flowers on the first or second bud. To encourage the formation of young shoots, cut back a quarter or a third of the oldest stems to the base when the plant matures. Prune every year in March or April.

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Planting period

Best planting time April to May, September to October
Recommended planting time February to April, August to October

Intended location

Suitable for Meadow, Woodland edge
Type of use Border, Free-standing, Container, Hedge
Hardiness Hardy down to -23°C (USDA zone 6a) Show map
Ease of cultivation Beginner
Planting density 1 per m2
Exposure Sun, Partial shade
Soil pH Acidic, Neutral
Soil type Silty-loamy (rich and light)
Soil moisture Moist soil, well-drained, rich

Care

Pruning instructions Remove any wilted flowers on the first bud or pair of buds located directly below to keep your plant healthy. When the plant is mature, cut back a quarter or a third of the oldest stems to promote the formation of young shoots. It's recommended to carry out this pruning every year during March and April.
Pruning Pruning recommended once a year
Pruning time March to April, August
Soil moisture Moist soil
Disease resistance Very good
Overwinter Can be left in the ground
4,7/5
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