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Value-for-money

Helianthemum Hartswood Ruby - Rock Rose

Helianthemum Hartswood Ruby
Rock Rose

4,7/5
25 reviews
2 reviews
2 reviews
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Nice plant, nothing to complain about for now; just planted.

Karine , 20/02/2024

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This plant carries a 12 months recovery warranty

More information

Value-for-money
Compact and creeping variety, with a dazzling and abundant summer flowering of raspberry red and ruby, on beautiful green foliage, will set the garden ablaze!
Flower size
3 cm
Height at maturity
20 cm
Spread at maturity
40 cm
Exposure
Sun
Hardiness
Hardy down to -18°C
Soil moisture
Dry soil, Moist soil
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Best planting time March to April
Recommended planting time March to June, September to October
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Flowering time May to August
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Description

Helianthemum 'Hartswood Ruby' is an excellent semi-evergreen rockery plant forming a compact, spreading undershrub. It is remarkable for its long and generous summer flowering, with single flowers, which are raspberry red with a ruby heart. Plant in borders or rockeries to enjoy a frenzy of beautiful purple and crimson colours!

 

'Hartswood Ruby' is a hybrid low-growing undershrub. It is spreading and dense, forming a cushion of fine and woody branches that carpet the ground. It measures 20 cm (7.9 in) in height with a spread of 40 cm (15.7 in). Its semi-evergreen foliage, composed of small linear, opposite dark green shiny leaves, enhances the abundant and luminous summer flowering. From May to August, it is covered with a multitude of small cup-shaped flowers measuring 3 cm (1.2 in) in diameter. The flowers have five petals, and are cherry red with a purple heart, adorned with a bouquet of golden stamens. Belonging to the Cistaceae family, Helianthemum is similar to Cistus in terms of the shape and delicacy of its flowers, as well as its strong preference for the sun. Helianthemum means "Flower of the sun" in Greek, an appropriate name for these flowers that only open in the presence of strong sunlight. Its delicate little flowers only last a few days, but constantly renew themselves throughout the summer, and even into autumn.

Helianthemum is the ideal plant to enhance a rocky garden, a sunny slope, or cascading on a retaining wall. It will also have a beautiful effect in the foreground of perennial beds or raised flower beds. It thrives in pots or containers for terraces, and is perfect for creating green walls and green roofs. It can be planted alongside many other rockery plants (Erigeron, Dianthus, Shrubby Wallflower), as well as perennial plants such as Lavender, Iris germanica, Rockrose, Helianthus, Convolvulus, Coreopsis, and Shrubby Sage.

Helianthemum Hartswood Ruby - Rock Rose in pictures

Helianthemum Hartswood Ruby - Rock Rose (Foliage) Foliage

Flowering

Flower colour red
Flowering time May to August
Flower size 3 cm

Foliage

Foliage persistence Evergreen
Foliage colour green

Plant habit

Height at maturity 20 cm
Spread at maturity 40 cm
Growth rate normal

Botanical data

Genus

Helianthemum

Cultivar

Hartswood Ruby

Family

Cistaceae

Other common names

Rock Rose

Origin

Cultivar or hybrid

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Planting and care

Very easy to grow and low maintenance, Helianthemum 'Hartswood Ruby' appreciates being planted in full sun, in a neutral or limestone soil, perfectly drained, even dry and rich in gravel or sand. This plant cannot tolerate stagnant moisture in winter. In cold and humid climates, lighten the soil by adding gravel and sand to improve drainage. Helianthemum is a very hardy plant that tolerates temperatures ranging from -15° C to -20° C (5° F to -4° F). Very tolerant to drought, it only requires regular and moderate watering in the first year following planting; afterwards, the plant can manage on its own. At the end of flowering, pinch off the faded stems and foliage to encourage autumn regrowth. Light pruning of the clump with hedge shears can be done after flowering to maintain a dense habit and prevent the centre from becoming bare.

Planting period

Best planting time March to April
Recommended planting time March to June, September to October

Intended location

Suitable for Shaded rockery, Woodland edge, Undergrowth
Type of use Edge of border, Container, Slope
Hardiness Hardy down to -18°C (USDA zone 7a) Show map
Planting density 7 per m2
Exposure Sun
Soil pH Neutral, Calcareous
Soil type Chalky (poor, alkaline and well-drained), Stony (poor and well-drained)
Soil moisture Dry soil, Moist soil, Well-drained

Care

Pruning instructions To maintain a compact habit, prune after flowering.
Pruning Pruning recommended once a year
Pruning time July to August
Disease resistance Very good
Overwinter Can be left in the ground
4,7/5

Summer flowering perennials

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