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Saxifraga arendsii Compactum

Saxifraga arendsii Compactum
Mossy saxifrage, Arends' saxifrage

5,0/5
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Arrived in good condition, beautiful young plant, generous.

claudine, 13/04/2023

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A particularly compact variety of mossy saxifrage. It forms a very low evergreen cushion, which is covered with an abundance of delicate pink flowers in spring. This small perennial ground cover will liven up moist rockeries, in the sun or partial shade, in light, well-drained, humus-rich soil that remains slightly moist.
Flower size
1 cm
Height at maturity
5 cm
Spread at maturity
35 cm
Exposure
Sun, Partial shade
Hardiness
Hardy down to -20°C
Soil moisture
Moist soil
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Best planting time March, September
Recommended planting time February to April, September to October
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Flowering time April to May
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Description

Saxifrage arendsii 'Compactum' (synonym S. arendsii 'Stansfieldii') is a compact and highly floriferous variety of mossy saxifrage. From early spring, it is covered with charming small light pink flowers carried by short stems. They bloom on dense and very low vegetation reminiscent of moss, which is evergreen in winter. It is a small perennial that works wonders in slightly moist rockeries, along pathways or in a pot. It should be placed in non-burning sun or partial shade, in light, well-drained soil that is not too dry.

As its name suggests, Saxifraga arendsii belongs to the Saxifragaceae family. 'Compactum' is a compact selection derived from this plant. Its evergreen foliage is composed of rosettes of bright green, toothed leaves, which is where the common name of 'mossy saxifrage' arises. Each rosette measures 2 to 4cm (1 to 2in) in diameter. The plant forms a small cushion measuring 5cm (2in) in height, which slowly spreads by producing lateral rosettes, over 30 to 40cm (12 to 16in) wide. Between late March and early May, this little dome is covered in 6-petalled flowers, 1cm (0.4in) in diameter, carried 3cm (1in) above the foliage. The abundant flowers last for a few weeks.

A fan of partly shaded and rather calcareous rockeries, 'Compactum' requires a humus-rich substrate such as leaf compost that remains slightly moist but not waterlogged. This small alpine perennial can creep into crevices or gaps in paving stones. It will not be comfortable in very dry soils or under scorching sun. When planted en masse, it can line the edge of a gravel path. It can also be grown in a pot, respecting the same conditions as in open ground: light, slightly moist and well-draining substrate. It can be easily combined with other perennials that require the same conditions, such as some ferns (Phyllitis scolopendrium, Cheilanthes lanosa) or with Alchemilla erythropoda, and of course with other varieties of mossy saxifrages such as 'Pixie' or 'Peter Pan'.

Flowering

Flower colour pink
Flowering time April to May
Inflorescence Solitary
Flower size 1 cm
Fragrance slightly scented

Foliage

Foliage persistence Evergreen
Foliage colour green

Plant habit

Height at maturity 5 cm
Spread at maturity 35 cm
Growth rate slow

Botanical data

Genus

Saxifraga

Species

arendsii

Cultivar

Compactum

Family

Saxifragaceae

Other common names

Mossy saxifrage, Arends' saxifrage

Origin

Cultivar or hybrid

Product reference173861

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Planting and care

Plant Saxifraga arendsii 'Compactum' (Stansfiedlii) in permeable and humus-rich, neutral or chalky soil that is well-drained. The soil should always remain slightly moist, without being waterlogged. Adding compost or potting soil to heavy soil is beneficial. This plant prefers a semi-shaded exposure and is sensitive to dry and scorching conditions. It requires little maintenance. Faded flowers can be removed after flowering for a cleaner look. It is best to plant this small perennial in March.

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Planting period

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

Intended location

Suitable for Rockery, Shaded rockery
Type of use Edge of border, Container
Hardiness Hardy down to -20°C (USDA zone 6b) Show map
Ease of cultivation Amateur
Planting density 8 per m2
Exposure Sun, Partial shade
Soil pH Neutral, Calcareous
Soil type Chalky (poor, alkaline and well-drained), Silty-loamy (rich and light), Stony (poor and well-drained)
Soil moisture Moist soil, well-drained

Care

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