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Saxifraga cortusifolia Shiranami

Saxifraga cortusifolia Shiranami
Saxifrage

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Gorgeous young plants with beautiful white flowers.

Nelly, 24/10/2023

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More information

Small deciduous perennial of woodland and shaded rocky areas, appreciated for its late, delicate, and abundant flowering from September to November. This saxifrage bears pretty double and dentate pure white flowers on succulent-looking foliage. It is cultivated in humus-rich, moist but well-drained soil, both in the ground and in pots.
Flower size
5 cm
Height at maturity
20 cm
Spread at maturity
20 cm
Exposure
Partial shade, Shade
Hardiness
Hardy down to -15°C
Soil moisture
Moist soil
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Best planting time March, October
Recommended planting time February to May, September to October
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Flowering time September to November
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Description

Saxifraga 'Shiranami' is a refined small perennial of the undergrowth and shaded rocky areas. It is adorned with pretty rounded and glossy foliage. At the end of the season, it produces a generous and delicate flowering of small white, double and asymmetrical dentate flowers. Plant it in humus-rich, moist but well-drained soil, in the ground or a container. You can also cultivate it in the Japanese style, in bowls that can be placed near the house during flowering, from September to November.

 

Saxifraga cortusifolia var. fortunei, from the Saxifragaceae family, is native to Japanese forests. This small plant develops a rosette of deciduous leaves 20cm (8in) in diameter. They are rounded, lobed, dentate, and glossy, and measure from 5 to 8cm (2 to 3in) long. The flowering plant will reach approximately 20cm (8in) in height and spread. In this 'Shiranami' variety, the rounded and lobed foliage is particularly fine. Its colour is a medium green, slightly tinged with olive-green. At the end of summer, and until the first cold, pyramid-shaped panicles measuring 10cm (4in) long emerge from the tuft of leaves. They bear a multitude of globose flower buds that open into very pretty white flowers, distinctly asymmetrical, with a diameter of 3 to 5cm (1 to 2in). They are formed by short upper petals and numerous longer lower petals, fringed at the edges. The small heart of the flower is a bright yellow. Lean in a little closer to discover their delicate scent.

 

Saxifraga 'Shiranami' thrives in light, humus-rich, moist, and well-drained soil in semi-shade or full shade. These conditions can be found in a cool shady rockery or near a north-facing facade, in well-drained soil. It can also be planted at the base of deciduous trees or shrubs, taking care to remove dead leaves that could cover the plant in autumn. It also makes lovely borders, adorns walls, and decorates shaded areas of a patio. Dwarf hostas, Japanese ferns (Athyrium niponicum var. pictum), bellflowers, and Veronica umbrosa will be good companions for this extremely refined small perennial.

 

NOTE: This is a delicate plant to be reserved for experienced gardeners. Plant 'Shiranami' Saxifrage in any light, moist, slightly acidic soil, without excess limestone. This perennial does not tolerate heavy and wet soils in winter, nor limestone and dry soils in summer.

Saxifraga cortusifolia Shiranami in pictures

Saxifraga cortusifolia Shiranami (Flowering) Flowering

Flowering

Flower colour white
Flowering time September to November
Inflorescence Solitary
Flower size 5 cm
Fragrance slightly scented

Foliage

Foliage persistence Deciduous
Foliage colour medium green

Plant habit

Height at maturity 20 cm
Spread at maturity 20 cm
Growth rate slow

Botanical data

Genus

Saxifraga

Species

cortusifolia

Cultivar

Shiranami

Family

Saxifragaceae

Other common names

Saxifrage

Origin

Cultivar or hybrid

Product reference851571

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Planting and care

Plant from September to March, 9 plants per m², in a well-draining and rich mixture of ericaceous soil, pumice, and garden soil. It thrives in moist and humus-rich soils found in mountain woodlands and does not tolerate excessive winter moisture or summer drought. However, it can tolerate root competition from trees and bushes as long as the soil does not dry out in summer. Choose a semi-shaded to shaded position, always keeping it moist. If planted at the base of deciduous trees or bushes, remove any fallen autumn leaves covering the clump. It is susceptible to attacks from aphids, gastropods, and vine weevils.

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Planting period

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

Intended location

Suitable for Shaded rockery, Woodland edge
Type of use Edge of border, Container, Slope
Hardiness Hardy down to -15°C (USDA zone 7b) Show map
Ease of cultivation Experienced
Planting density 9 per m2
Exposure Partial shade, Shade
Soil pH Acidic, Neutral
Soil type Silty-loamy (rich and light), Stony (poor and well-drained)
Soil moisture Moist soil, humus-bearing and well-drained

Care

Pruning No pruning necessary
Disease resistance Good
Overwinter Can be left in the ground
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