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Aster cordifolius Blue Heaven

Aster cordifolius Blue Heaven
Blue wood aster, Heart-leaved aster

4,5/5
14 reviews
4 reviews
2 reviews
1 reviews
0 reviews

Plants received perfectly well packaged and have taken well. The young plant is inconspicuous before flowering, but when the flowers open, it's a marvel! The colour is a beautiful violet leaning towards blue and the plant is literally covered in flowers. I love them!

Marie, 07/10/2023

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This plant carries a 12 months recovery warranty

More information

Value-for-money
This bushy aster produces an abundance of small lavender-blue flowers carried on stems with brown tips. It is the queen of autumn gardens!
Flower size
1 cm
Height at maturity
90 cm
Spread at maturity
40 cm
Exposure
Sun, Partial shade
Hardiness
Hardy down to -29°C
Soil moisture
Moist soil
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Recommended planting time March to May, September to November
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Flowering time September to November
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Description

Aster cordifolius 'Blue Heaven' is covered with small lavender-blue flowers with yellow to purple anthers from September until frost. Asters are essential in autumn gardens.

 

Nicknamed "Eye of Christ," this hardy perennial forms a well-branched bushy clump with a height of 90 cm (35in). It develops deciduous, simple, lanceolate, toothed, green leaves, 12cm (5in) long. The tiny lavender-blue flowers with yellow to purple anthers are grouped in bouquets. They grow on brown-tipped, branched, smooth stems. The flowers make a beautiful floral arrangement in a vase.

Easy to grow, Aster cordifolius 'Blue Heaven' appreciates a consistent, calcareous, well-drained, not too poor soil that remains moist in summer. It prefers a sunny position. This variety tolerates light shade well. Prune the stems after flowering and divide if necessary in early spring.

Aster cordifolius 'Blue Heaven' is used in flower beds or to adorn a fence, combined with perennial geraniums or grasses. It is also ideal for making bouquets. 

Aster cordifolius Blue Heaven in pictures

Aster cordifolius Blue Heaven (Flowering) Flowering
Aster cordifolius Blue Heaven (Foliage) Foliage
Aster cordifolius Blue Heaven (Plant habit) Plant habit

Flowering

Flower colour blue
Flowering time September to November
Flower size 1 cm
Good for cut flowers Cut flower blooms

Foliage

Foliage persistence Deciduous
Foliage colour medium green

Plant habit

Height at maturity 90 cm
Spread at maturity 40 cm
Growth rate normal

Botanical data

Genus

Aster

Species

cordifolius

Cultivar

Blue Heaven

Family

Asteraceae

Other common names

Blue wood aster, Heart-leaved aster

Origin

Cultivar or hybrid

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Planting and care

Aster cordifolius 'Blue Heaven' should be planted in spring or autumn with a spacing of 35cm (14in) in good garden soil. Stake and apply flower fertiliser in spring. To control the height, you can pinch out the shoots in April/May. Water well in summer. Cut back to ground level after the first frosts. Divide every 3/5 years in spring to prevent it from thinning out. Beware of snails and slugs as well as fungal diseases.

Planting period

Recommended planting time March to May, September to November

Intended location

Suitable for Shaded rockery, Woodland edge, Undergrowth
Type of use Border
Hardiness Hardy down to -29°C (USDA zone 5) Show map
Ease of cultivation Amateur
Planting density 5 per m2
Exposure Sun, Partial shade
Soil pH Any
Soil type Clayey-chalky (heavy and alkaline), Silty-loamy (rich and light), Stony (poor and well-drained)
Soil moisture Moist soil, well-drained

Care

Pruning instructions Remove the stems and faded flowers at the end of winter.
Pruning Pruning recommended once a year
Pruning time March to April
Overwinter Can be left in the ground
4,5/5

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