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Rosa x polyantha - Sans Contraintes - 'Toscana' - Ground Cover Rose

Rosa x polyantha SANS CONTRAINTES® Toscana® 'Korstesgli'
Korstesgli

4,3/5
9 reviews
3 reviews
5 reviews
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Charming little rose bush, very perennial and floriferous. It has a lovely effect as a border in the flowerbed. This is the rose bush that withstands the harsh conditions of my garden the best: very cold humidity, frequent and cold rains and winds, calcareous soil. It is in remarkably good health and grows regularly, unlike many others that I had to give up on (chlorosis due to the calcareous soil that the roots eventually reach). In short, a little marvel of a beautiful distinguished raspberry colour that stands out well against the greenery.

Marie, 09/09/2024

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More information

ADR
With a spreading, low and dense growth, this true ground cover rose produces small but very numerous, very full, bright raspberry-red flowers. They bloom in generous clusters from summer to frost, enhanced by a very pretty foliage of shiny dark green. Requiring very little maintenance and highly disease-resistant, it obtained the German ADR label in 2011. Ideal for small gardens, perfect in pots or containers, it will delight all gardeners.
Flower size
4 cm
Height at maturity
30 cm
Spread at maturity
60 cm
Exposure
Sun, Partial shade
Hardiness
Hardy down to -23°C
Soil moisture
Moist soil
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Best planting time March, October
Recommended planting time January to May, September to December
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Flowering time June to October
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Description

The 'Toscana' rose bush is a beautiful ground cover that unfurls a carpet of vibrant raspberry-red flowers from late spring until the first frost. Its miniature but double roses bloom in frothy clusters on densely packed foliage with a shiny dark green colour that remains decorative until the end of the season. Robust and hardy, this rose from the 'Sans Contraintes' series requires little attention or care from beginner gardeners. It can fit anywhere and works wonders in front of taller shrubs, on large borders along pathways or in a planter on the balcony.

The flowers of Rosa Toscana ('Korstesgli), gathered in terminal clusters, come from the polyantha rose, an old hybrid resulting from Rosa multiflora and Rosa chinensis. This excellent German variety obtained the highly selective and demanding German A.D.R label in 2001 for its high resistance to diseases, among other criteria. It was introduced in 1999 by the rose breeder Kordes. Kordes' 'Sans Contraintes' roses grow independently, requiring no pruning or chemical treatments, and will reward the little care they receive a hundredfold.

This wide and low bush has a dense habit, compact and well-covering vegetation, and develops spreading branches on the ground covered with thorns. In a few years, it will reach about 30 cm (12in) in height with a spread of 60 cm (24in), or a bit more if allowed to grow freely without pruning. The double flowers, 3 to 4 cm (1 to 2in) in diameter, gathered in large clusters, are abundantly produced continuously from May to October if the soil remains moist in summer. In this 'Toscana' variety, the flower buds open into globular flowers composed of many highly undulated petals. The plant develops elegant, well-packed foliage with thick and shiny small leaflets, transitioning from bright green to dark green. The leaves turn yellow in autumn before falling.

The 'Toscana' ground cover rose is exceptionally hardy and adapts to all soils that are not too dry and to all climates, making it suitable for many regions. Plant it as a border, in a bed, in a planter on the terrace, or on a large slope where it will cover the ground. It can also be planted in groups of 3 plants, arranged in a triangle, isolated on a lawn in a small garden. Plant it in groups or combine it with other ground cover roses of different colours to highlight a pathway or the borders of light or opulent shrubs and perennials. For example, it can be paired with hardy geraniums (Geranium Blue Cloud, Anne Folkard, Nimbus, Orion), bellflowers (lactiflora, rapunculoides), catmints, foxgloves, or other perennial salvias. It blends perfectly with all your shrub roses to add a lovely romantic touch to your garden.

 

Rosa x polyantha - Sans Contraintes - 'Toscana' - Ground Cover Rose in pictures

Rosa x polyantha - Sans Contraintes - 'Toscana' - Ground Cover Rose (Flowering) Flowering
Rosa x polyantha - Sans Contraintes - 'Toscana' - Ground Cover Rose (Foliage) Foliage

Plant habit

Height at maturity 30 cm
Spread at maturity 60 cm
Habit creeping
Growth rate fast

Flowering

Flower colour red
Flowering time June to October
Inflorescence Corymb
Flower size 4 cm

Foliage

Foliage persistence Deciduous
Foliage colour dark green

Botanical data

Genus

Rosa

Species

x polyantha

Cultivar

SANS CONTRAINTES® Toscana® 'Korstesgli'

Family

Rosaceae

Other common names

Korstesgli

Origin

Cultivar or hybrid

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Planting and care

Planting your rose requires some preparation. Begin by working the soil to a depth of 25 cubic cm and adding a base amendment like blood, fish, and bone to the bottom of the planting hole. Remove the plant from its pot and position it by covering the top of the root ball with 3 cm (1in) of soil. Refill the hole and water generously to eliminate any air pockets. It's essential to water the rose regularly for a few weeks during dry weather to help the roots grow. Use a special rose fertiliser that stimulates plant flowering. Choose a sunny location or partial shade to plant your rose in hot regions.

Roses may develop unsightly spots at the end of summer, but this is a natural occurrence and doesn't harm the rose's growth

 

Planting period

Best planting time March, October
Recommended planting time January to May, September to December

Intended location

Suitable for Meadow, Woodland edge
Type of use Border, Edge of border, Container, Slope
Hardiness Hardy down to -23°C (USDA zone 6a) Show map
Ease of cultivation Beginner
Planting density 3 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, Loose and deep soil.

Care

Pruning instructions During the flowering season, it's important to regularly remove any wilted flowers. In the springtime, after any frosts, prune all branches to between 3 and 5 buds, depending on their strength. In the autumn and winter, remove any dead wood.
Pruning Pruning recommended once a year
Pruning time March, July to September
Soil moisture Moist soil
Disease resistance Very good
Overwinter Can be left in the ground
4,3/5
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