– southern catalpa
Distribution: 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.
Habitat: Disturbed habitats and abandoned homesteads.
Origin: Introduced from central and eastern North America
Flowers: May-June
Growth Duration: Perennial
– northern catalpa
Distribution: 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.
Habitat: Disturbed areas and abandoned homesteads.
Origin: Introduced from central and eastern North America
Flowers: May-June
Growth Duration: Perennial