Origin: Introduced
Conservation Status: Not of concern
[none provided]
 Occurring east of the Cascades crest in Washington; Washington to California and scattered in other western U.S. states; native from Great Plains to Atlantic Cost.
   Occurring east of the Cascades crest in Washington; Washington to California and scattered in other western U.S. states; native from Great Plains to Atlantic Cost. Occurring chiefly east of the Cascades crest in Washington; British Columbia to Washington, east to Idaho; native from southern Rocky Mountains east to the Atlantic Coast.
   Occurring chiefly east of the Cascades crest in Washington; British Columbia to Washington, east to Idaho; native from southern Rocky Mountains east to the Atlantic Coast.PNW Herbaria: Specimen records of Catalpa in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Catalpa checklist entry
OregonFlora: Catalpa information
E-Flora BC: Catalpa atlas page
CalPhotos: Catalpa photos