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Family: asteraceae
Common name(s): Smooth Aster
Synonym(s): Aster laevis
Hardiness ratings: USDA zone 2~4 - 7~9 
General resources
Links for Symphyotrichum laeve
- BBC Gardening: Aster laevis 'Calliope' - Plant profile with horticultural details and garden uses.
 (1 photo)
- Connecticut Botanical Society - Wildflower profile. (2 photos)
- Dave's Garden PlantFiles - Profile page with horticultural basics, and member-contributed photos and comments. (zone 2-7) (1 photo)
- Denver Botanic Gardens - Description, native range, and cultural requirements. (additional pages for other varieties) (zone 4). Also a page for 'Bluebird'.
- Digging Dog Nursery: Aster laevis 'Bluebird' - Catalog page with descriptive information (additional pages for other varieties) (zone 4) (1 photo)
- Garden.org - Community-assembled plant profile (2 varieties in database) (5 photos)
- Heritage Perennials: Aster laevis ‘Calliope’ - Profile with description and horticultural details. (zone 4-9) (1 photo)
- Illinois Wildflowers - Informative illustrated page with description and cultivation details, also covering range and faunal associations.
- Kansas Wildflowers & Grasses - Plant portrait with botanical details and description (11 photos)
- Lady Bird Johnson Wildflower Center - Plant description and characteristics with notes on distribution, culture, and propagation. (3 photos)
- Missouri Botanical Garden - Plantfinder page for one of the plants growing at the garden, with usually one or more photos, horticultural information, and noteworthy characteristics. (zone 3-8) (2 photos). Also a page for 'Bluebird'.
- North Carolina State University factsheet - Plant profile with horticultural details and comments (zone 4-8a) (10 photos)
- Ontario Rock Garden Society - Germination information
- Plant Delights Nursery - Catalog page with photo, horticultural basics, and descriptive blurb. (additional pages for other varieties) (1 photo)
Links
- Garden.org - Community-assembled plant profile (2 photos)
Common name(s): Smooth Blue Aster
Hardiness ratings: USDA zone 3
Links
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