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Aster dumosus Lady in Blue

Symphyotrichum novi-belgii Lady In Blue
Michaelmas Daisy, Dwarf aster

4,5/5
16 reviews
3 reviews
2 reviews
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1 reviews

Plant purchased and planted a bit late (end of June) but simply magnificent in flowering for a month. Fast delivery and well packaged.

Fée11, 28/09/2025

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This plant carries a 12 months recovery warranty

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Value-for-money
A low-growing, dense autumn perennial, which is covered in September and October with small semi-double lavender-blue daisies with yellow centres. Its compact habit is particularly suited to borders, the front of beds and containers. It flowers best in sun in soil that remains moist.
Flower size
3 cm
Height at maturity
35 cm
Spread at maturity
45 cm
Exposure
Sun
Hardiness
Hardy down to -20.5°C
Soil moisture
Moist soil
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Best planting time March, October
Recommended planting time March to May, September to November
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Flowering time September to October
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Description

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Asters : growing and care
Family sheet
by Alexandra 18 min.
Asters : growing and care
Read article

Aster dumosus Lady in Blue in pictures

Aster dumosus Lady in Blue (Flowering) Flowering
Aster dumosus Lady in Blue (Foliage) Foliage

Flowering

Flower colour blue
Flowering time September to October
Inflorescence Flower head
Flower size 3 cm

Foliage

Foliage persistence Deciduous
Foliage colour dark green

Plant habit

Height at maturity 35 cm
Spread at maturity 45 cm
Growth rate normal

Botanical data

Genus

Symphyotrichum

Species

novi-belgii

Cultivar

Lady In Blue

Family

Asteraceae

Other common names

Michaelmas Daisy, Dwarf aster

Botanical synonyms

Aster dumosus ‘Lady in Blue’, Symphyotrichum novi-belgii ‘Lady in Blue’

Origin

Cultivar or hybrid

Product reference72112

Planting and care

Aster ‘Lady in Blue’ is planted from February to April or from September to November, in full sun for more generous flowering, or in light partial shade. Loosen the soil deeply and incorporate mature compost if it is poor; in compact clay that is wet in winter, improve drainage by incorporating potting compost and gravel into your soil. Space the young plants 35 to 45 cm apart. Water regularly at the base of the plant during the first season so that the stump roots well. A few waterings during summer droughts are necessary. Avoid regularly wetting the leaves. No staking is necessary. Divide the clumps in spring every three or four years. In a pot, choose a container at least 30 cm across, with good drainage holes in the base, filled with a fertile, free-draining growing medium; watering should be regular in summer.

Planting period

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

Intended location

Suitable for Meadow
Type of use Edge of border, Container
Hardiness Hardy down to -20.5°C (USDA zone 6b) Show map
Ease of cultivation Beginner
Planting density 7 per m2
Exposure Sun
Soil pH Any
Soil type Clayey (heavy), Clayey-chalky (heavy and alkaline), Silty-loamy (rich and light)
Soil moisture Moist soil, rich and well-drained

Care

Pruning instructions Using shears, cut back faded stems and flowers to ground level in late winter.
Pruning Pruning recommended once a year
Pruning time March to April
Disease resistance Good
Overwinter Can be left in the ground
4,5/5

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