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Family: bignoniaceae
Common name(s): northern catalpa
Hardiness ratings: USDA zone 4~5 - 8 
General resources
Links for Catalpa speciosa
- Carolina Nature - Illustrated woody plant profile, with notes on range and identification.
 (4 photos)
- Dave's Garden PlantFiles - Profile page with horticultural basics, and member-contributed photos and comments. (zone 4-8) (16 photos)
- Denver Botanic Gardens - Description, native range, and cultural requirements. (zone 5) (8 photos)
- Floridata - Illustrated informative profile page with notes on culture, usage, and noteworthy features. (zone 4-8) (3 photos)
- Garden.org - Community-assembled plant profile (27 photos)
- Illinois Wildflowers - Informative illustrated page with description and cultivation details, also covering range and faunal associations. (5 photos)
- Kansas Wildflowers & Grasses - Plant portrait with botanical details and description (13 photos)
- Lady Bird Johnson Wildflower Center - Plant description and characteristics with notes on distribution, culture, and propagation. (7 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 4-8) (13 photos)
- Missouri Plants - Description and photographs of botanical features, with notes about habitat and native status. (6 photos)
- North Carolina State University factsheet - Plant profile with horticultural details and comments (zone 4-8) (16 photos)
- Ontario Rock Garden Society - Germination information (use search on page to find this taxon)
- Trees and Shrubs Online - Reference page curated by the International Dendrology Society with descriptive characteristics and horticultural notes. (11 photos)
- Virginia Tech Dendrology - Factsheet with botanical characteristics and photos of various features. (6 photos)
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