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Leptodermis oblonga Summer Stars

Leptodermis oblonga Summer Stars

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This plant carries a 24 months recovery warranty

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A small deciduous bush with a spherical to conical habit, slightly irregular and as wide as it is tall. Its numerous lanceolate leaves of a beautiful bright green give it a very dense appearance. From the end of spring, it produces small trumpet-shaped flowers in a bluish-purple colour. Fragrant also attract pollinators and butterflies and bloom until the end of summer. Hardy, this compact bush thrives in most moist and well-drained soils, in full sun or partial shade. Its compactness also allows for beautiful pots on a patio or balcony.
Flower size
4 cm
Height at maturity
60 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 to April, October to November
Recommended planting time March to May, September to November
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Flowering time June to September
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Description

The Leptodermis oblonga 'Summer Stars' is a beautiful find for the garden or patio. It is a small deciduous shrub with pretty, bright green foliage as a backdrop for the long, bluish-purple flowering. From June to September, small trumpet-shaped flowers bloom, spreading a pleasant fragrance. Resistant to cold, this compact shrub is easily grown in a pot to decorate a terrace or balcony throughout the summer. In the garden, it adapts to most soils as long as they are moist, as it does not like dry conditions. It is easy to grow and perfect for small gardens in sunny or semi-shaded locations.

Leptodermis is a little-known member of the Rubiaceae family, which includes over 600 genera and 10,000 species. This extensive family includes plants in all climates, such as the tropical Coffee plant, the wild Bedstraw of our countryside, or the Cephalanthus with its astonishingly ornamental flowers. Leptodermis oblonga is native to Asia, growing naturally in central China, Mongolia, and northern Vietnam. Its English vernacular name, Baby Lilac Bush, accurately describes the dwarf lilac-like appearance of this compact shrub with fragrant flowers.
'Summer Stars' is a horticultural variety that is still relatively uncommon in gardens, but it should become more popular as it is as charming as it is easy to grow. This relatively slow-growing shrub reaches maturity after 5 to 8 years of cultivation at approximately 50 to 60 cm in height and width. It forms an upright and spreading clump, giving it a more or less spherical habit. The brown branches are thin and dense and bear numerous sessile (without petiole) leaves grouped in whorls. Proportionate to the shrub's size, these leaves are small, measuring 3 to 4 cm long, with a lanceolate shape and a beautiful green colour. In late spring, tubular trumpet-shaped flowers appear, consisting of five fused petals that open at the tip. The same length as the leaves, they are grouped in five to seven units at the ends of the branches. Their colour varies from mauve lilac to bluish-purple and is well complemented by the bright green foliage. Blooming until September, they emit a pleasant fragrance and attract bees, butterflies, and other pollinators.

Growing in good, well-drained garden soil with a tendency to be moist, Leptodermis oblonga 'Summer Stars' is easy to cultivate. This shrub exudes a romantic charm, perfectly expressed in a beautiful glazed decorative pot or raw earth. The garden will find its place at the edge of a flower bed, alongside perennial plants or other shrubs. Plant some clumps of Daylilies with it, allowing you to create cheerful contrasts of shapes and colours, as the range available is rich in varieties, each more beautiful than the next. The Dicentra 'Pink Diamonds', a Bleeding Heart with stylishly patterned pink flowers enhanced by finely cut bluish-green foliage, will also be a perfect companion for your Leptodermis. In the background, the small Sambucus 'Cherry Lace' with its exceptionally finely cut dark foliage and beautiful glossy appearance will complete your scene. Blooming before the Leptodermis, it will offer you lovely bouquets of pink flowers.

Leptodermis oblonga Summer Stars in pictures

Leptodermis oblonga Summer Stars (Plant habit) Plant habit

Plant habit

Height at maturity 60 cm
Spread at maturity 60 cm
Habit ball, spherical
Growth rate slow

Flowering

Flower colour blue
Flowering time June to September
Inflorescence Umbel
Flower size 4 cm
Fragrance Fragrant
Bee-friendly Attracts pollinators

Foliage

Foliage persistence Deciduous
Foliage colour medium green

Botanical data

Genus

Leptodermis

Species

oblonga

Cultivar

Summer Stars

Family

Rubiaceae

Origin

Cultivar or hybrid

Planting and care

The Leptodermis oblonga 'Summer Stars' grows in the sun or under light shade provided by taller bushes, providing it with some atmospheric humidity. It needs moist but well-drained soil, as it does not appreciate dryness. However, the chemical nature of the soil does not matter to it, as it adapts well to acidic, neutral, or limestone soils. Soak the root ball in a bucket of water for fifteen minutes to ensure it is well saturated, and dig a hole 50 cm wide and deep during this time. Add planting compost to the existing soil (50/50), position the root ball, fill in around it, and water thoroughly. Provide additional water during the first two years and dry periods after that. This bush tends to sucker, which can be interesting if you place it in an area where it has room to spread. However, if you integrate it into a well-maintained flowerbed, avoid planting fragile plants around it, as you will disturb their roots when removing the suckers.
You can also plant your Leptodermis in a pot to enhance your patio or balcony. Choose one with a diameter of about 45 cm, either made of thick terracotta or "double-skinned" if made of plastic (two layers separated by an air gap) to provide thermal insulation and prevent the roots from overheating in summer.

Planting period

Best planting time March to April, October to November
Recommended planting time March to May, September to November

Intended location

Suitable for Meadow, Rockery, Woodland edge
Type of use Edge of border, Container
Hardiness Hardy down to -23°C (USDA zone 6a) Show map
Ease of cultivation Amateur
Planting density 4 per m2
Exposure Sun, Partial shade
Soil pH Any
Soil type Clayey-chalky (heavy and alkaline), Silty-loamy (rich and light)
Soil moisture Moist soil, Fresh, well-drained soil

Care

Pruning No pruning necessary
Soil moisture Moist soil
Disease resistance Good
Overwinter Can be left in the ground

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