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Symphyotrichum cordifolium (Blue wood aster)
2 hours care
per year
per year
1.5m
Max height
Max height
0.5m
Max spread
Max spread
2-5 years
To maturity
To maturity
Plant details
Botanical name
Symphyotrichum cordifolium
Other names
Blue wood aster, Aster cordifolius, Heart-leaved aster, Heartleaf aster
Genus
Symphyotrichum Symphyotrichum
Species
S. cordifolium - S. cordifolium is an erect, clump-forming, deciduous perennial with broadly ovate to heart-shaped, mid-green leaves and, from late summer into autumn, loose panicles of blue flower heads with yellow centres.
Symphyotrichum cordifolium is: Deciduous
Habit
Erect, Clump-forming
Flower
Blue in Summer; Blue in Autumn
Foliage
Mid-green in Spring; Mid-green in Summer; Mid-green in Autumn
How to care
Watch out for
Pests
Pest free, may suffer from slugs on new growth.
Grey mould , Leaf spot , Verticillium wilt Grey mould , Leaf spot , Verticillium wilt
General care
Pruning
Cut back in late autumn. Divide every 3-4 years in spring to maintain vigour.
Propagation methods
Division
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Where to grow
Symphyotrichum cordifolium (Blue wood aster) will reach a height of 1.5m and a spread of 0.5m after 2-5 years.
Suggested uses
Wildlife, Flower Arranging, Cottage/Informal, Coastal, Beds and borders
Cultivation
Prefers moderately fertile, moist soil in partial shade. Mulch after cutting back in late autumn. Stems may need staking.
Soil type
Chalky, Clay, Loamy, Sandy (will tolerate most soil types)
Soil drainage
Moisture-retentive
Soil pH
Acid, Alkaline, Neutral
Light
Partial Shade
Aspect
North, 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 cordifolium
Other names
Blue wood aster, Aster cordifolius, Heart-leaved aster, Heartleaf aster
Genus
Symphyotrichum Symphyotrichum
Species
S. cordifolium - S. cordifolium is an erect, clump-forming, deciduous perennial with broadly ovate to heart-shaped, mid-green leaves and, from late summer into autumn, loose panicles of blue flower heads with yellow centres.
Native to
Eastern North America
Foliage
Deciduous
Habit
Erect, Clump-forming
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Colour
Flower
Blue in Summer; Blue in Autumn
Foliage
Mid-green in Spring; Mid-green in Summer; Mid-green in Autumn
How to care
Watch out for
Pests
Pest free, may suffer from slugs on new growth.
Specific diseases
Grey mould , Leaf spot , Verticillium wilt
General care
Pruning
Cut back in late autumn. Divide every 3-4 years in spring to maintain vigour.
Propagation methods
Division
Monthly care advice
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Where to grow
Symphyotrichum cordifolium (Blue wood aster) will reach a height of 1.5m and a spread of 0.5m after 2-5 years.
Suggested uses
Wildlife, Flower Arranging, Cottage/Informal, Coastal, Beds and borders
Cultivation
Prefers moderately fertile, moist soil in partial shade. Mulch after cutting back in late autumn. Stems may need staking.
Soil type
Chalky, Clay, Loamy, Sandy (will tolerate most soil types)
Soil drainage
Moisture-retentive
Soil pH
Acid, Alkaline, Neutral
Light
Partial Shade
Aspect
North, 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
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: | Moisture-retentive | Tell us... |
| Soil pH: | Acid, Alkaline, Neutral | Tell us... |
| Light: | Partial Shade | Tell us... |
| Aspect: | North, South, East, West | Tell us... |
| Exposure: | Exposed, Sheltered | Tell us... |
| Hardiness: | Hardy (H4) | Tell us... |
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