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Stokesia laevis Alba and Blue Star

Stokesia laevis Alba, Blue Star
Stokes' Aster

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Collection contains 2 plants

  • 1 x Stokesia laevis Alba
  • 1 x Stokesia laevis Blue Star

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This plant carries a 12 months recovery warranty

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A pair of two different varieties of Stokesia. From summer to autumn, these perennial plants offer white flowers for the 'Alba' form and bright blue flowers with a white centre for the 'Blue Star' variety. They are suitable for well-drained, neutral to acidic soils and they thrive in sunny exposures. Their flowers are similar to scabious and bring a welcome wild charm to perennial borders and beds, in natural-style gardens or English cottage gardens. These nectar-rich plants are also loved by pollinators.
Exposure
Sun
Hardiness
Hardy down to -20°C
Soil type
Silty-loamy (rich and light)
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Best planting time March to April, October
Recommended planting time February to May, September to November
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Flowering time July to October
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Collection items (2 plants)

Description

This pair of Stokesias is composed of Stokesia laevis 'Alba' and Stokesia laevis 'Blue Star', two perennial plants ideal for adding colour to the garden for long weeks while promoting biodiversity. American Cornflowers can flower from July to October and bring a very natural charm to any setting. They can withstand temperatures as low as -15°C and tolerate drought as well as slightly acidic or limestone soils.

The duo consists of:

1 x Stokesia laevis 'Alba': This variety is distinguished by its white pompon-shaped flowers, a characteristic that sets it apart from its blue-flowering cousin. It generally reaches a height of about 40 cm when in bloom.

1 x Stokesia laevis 'Blue Star': Its sky blue flowers with white centres are very bright. Slightly taller than the previous variety, it measures 50 to 60 cm high.

These Stokesias should be planted in spring or autumn, in perfectly drained, non-limestone soil, and in full sun. They will look beautiful in flowerbeds, borders, or rockeries, but can also be planted in pots to enhance a terrace or balcony. For optimal visual effect, place the taller 'Blue Star' variety behind the slightly shorter 'Alba' form. Allow for 5 to 6 plants per square metre, with a spacing of 40 cm between each plant.

The Stokesias in this duo can be paired with Gaura lindheimeri 'Blanche' to create an interesting contrast with their delicate white flowers. Also add an Echinacea purpurea 'Magnus', with its pink flowers, to enrich the colour palette. A variety of Penstemon digitalis, such as 'Husker Red', with its white flowers and dark foliage, will perfectly complement this scene. These companion plants arranged in a mix with the Stokesias make a rich and diverse composition.

Flowering

Flower colour two-tone
Flowering time July to October
Inflorescence Flower head
Flower size 8 cm
Bee-friendly Attracts pollinators

Foliage

Foliage persistence Deciduous
Foliage colour green

Plant habit

Height at maturity 60 cm
Growth rate normal

Botanical data

Genus

Stokesia

Species

laevis

Cultivar

Alba, Blue Star

Family

Asteraceae

Other common names

Stokes' Aster

Origin

Cultivar or hybrid

Planting and care

The Stokesia laevis is easy to grow in any non-limestone soil, perfectly drained and in full sun. However, this plant tolerates partial shade in very sunny climates. A soil that retains moisture in winter is the main cause of failure in growing the American bluebell. It is essential to add good draining materials such as coarse sand, gravel or small stones to a clayey planting soil, to a depth of 30-40 cm. Even though it appreciates moist soils, it surprisingly tolerates drought very well. In colder regions, it is useful to apply mulch to the crown in winter to make it more beautiful in spring. Remove faded flowers and regularly remove dried stems to encourage re-flowering. This plant is not susceptible to diseases or pests.

Planting period

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

Intended location

Suitable for Meadow
Type of use Border, Edge of border, Container
Hardiness Hardy down to -20°C (USDA zone 6b) Show map
Ease of cultivation Amateur
Planting density 5 per m2
Exposure Sun
Soil pH Acidic, Neutral
Soil type Silty-loamy (rich and light)
Soil moisture Dry soil, Moist soil, Well-drained.

Care

Pruning instructions Cut the faded flowers and regularly remove the dried stems to encourage reflowering.
Pruning Pruning recommended once a year
Pruning time July to September
Disease resistance Very good
Overwinter Can be left in the ground

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