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Symphyotrichum lateriflorum var. horizontalis (Horizontal calico aster)
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2 hours care
per year
per year
0.6m
Max height
Max height
0.4m
Max spread
Max spread
2-5 years
To maturity
To maturity
Plant details
Botanical name
Symphyotrichum lateriflorum var. horizontalis
Other names
Horizontal calico aster, Aster lateriflorus 'Horizontalis' , Aster lateriflorus var. horizontalis
Genus
Symphyotrichum Symphyotrichum
Species
S. lateriflorum var. horizontalis - S. lateriflorum var. horizontalis is a clump-forming perennial with widely spreading, purple stems bearing linear, dark green leaves and, from midsummer into mid-autumn, white, sometimes pink-flushed flower heads with pink centres.
Symphyotrichum lateriflorum var. horizontalis is: Deciduous
Habit
Clump-forming, Spreading
Awards
RHS AGM (Award of Garden Merit)
Flower
White, Pink, Flushed pink in Summer; Pink, Flushed pink, White in Autumn
Foliage
Dark-green in Spring; Dark-green in Summer; Dark-green in Autumn
How to care
Watch out for
Specific pests
Aphids , Eelworms (leaf and bud) , Slugs , Snails Aphids , Eelworms (leaf and bud) , Slugs , Snails
Fusarium wilt , Grey mould , Leaf spot Fusarium wilt , Grey mould , Leaf spot
General care
Pruning
Mulch after cutting back in late autumn. This cultivar can be cut or pinched back in early summer to encourage a bushier, compact form and later flowers.
Propagation
Divide, preferably in spring, but can be done in autumn.
Propagation methods
Division
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Where to grow
Symphyotrichum lateriflorum var. horizontalis (Horizontal calico aster) will reach a height of 0.6m and a spread of 0.4m after 2-5 years.
Suggested uses
Beds and borders, Cottage/Informal, Flower Arranging, Wildlife
Cultivation
Prefers moderately fertile, moist soil in partial shade. Will tolerate well-drained soil in full sun.
Soil type
Chalky, Clay, Loamy, Sandy (will tolerate most soil types)
Soil drainage
Well-drained, Moist but well-drained
Soil pH
Acid, Alkaline, Neutral
Light
Partial Shade, Full Sun
Aspect
South, East, West
Exposure
Exposed, Sheltered
UK hardiness Note: We are working to update our ratings. Thanks for your patience.
Hardy (H4)
Companion plants
We do not currently have companion plants added for this plant.
Botanical name
Symphyotrichum lateriflorum var. horizontalis
Other names
Horizontal calico aster, Aster lateriflorus 'Horizontalis' , Aster lateriflorus var. horizontalis
Genus
Symphyotrichum Symphyotrichum
Species
S. lateriflorum var. horizontalis - S. lateriflorum var. horizontalis is a clump-forming perennial with widely spreading, purple stems bearing linear, dark green leaves and, from midsummer into mid-autumn, white, sometimes pink-flushed flower heads with pink centres.
Foliage
Deciduous
Habit
Clump-forming, Spreading
Awards
RHS AGM (Award of Garden Merit)
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Colour
Flower
White, Pink, Flushed pink in Summer; Pink, Flushed pink, White in Autumn
Foliage
Dark-green in Spring; Dark-green in Summer; Dark-green in Autumn
How to care
Watch out for
Specific pests
Aphids , Eelworms (leaf and bud) , Slugs , Snails
Specific diseases
Fusarium wilt , Grey mould , Leaf spot
General care
Pruning
Mulch after cutting back in late autumn. This cultivar can be cut or pinched back in early summer to encourage a bushier, compact form and later flowers.
Propagation
Divide, preferably in spring, but can be done in autumn.
Propagation methods
Division
Monthly care advice
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Where to grow
Symphyotrichum lateriflorum var. horizontalis (Horizontal calico aster) will reach a height of 0.6m and a spread of 0.4m after 2-5 years.
Suggested uses
Beds and borders, Cottage/Informal, Flower Arranging, Wildlife
Cultivation
Prefers moderately fertile, moist soil in partial shade. Will tolerate well-drained soil in full sun.
Soil type
Chalky, Clay, Loamy, Sandy (will tolerate most soil types)
Soil drainage
Well-drained, Moist but well-drained
Soil pH
Acid, Alkaline, Neutral
Light
Partial Shade, Full Sun
Aspect
South, East, West
Exposure
Exposed, Sheltered
UK hardiness Note: We are working to update our ratings. Thanks for your patience.
Hardy (H4)
USDA zones
Zone 9, Zone 8, Zone 7, Zone 6, Zone 5, Zone 4, Zone 3
In order to add a note on this plant, please add this plant to your plant lists.
| This plant likes... | Garden match | |
| Soil types: | Chalky, Clay, Loamy, Sandy (will tolerate most soil types) | Tell us... |
| Soil drainage: | Well-drained, Moist but well-drained | Tell us... |
| Soil pH: | Acid, Alkaline, Neutral | Tell us... |
| Light: | Partial Shade, Full Sun | Tell us... |
| Aspect: | South, East, West | Tell us... |
| Exposure: | Exposed, Sheltered | Tell us... |
| Hardiness: | Hardy (H4) | Tell us... |
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