|C. giganteum in bloom|
The conservation status of C. giganteum is secure in Canada  and secure in the United States, except in Tennessee, where it is listed as threatened , likely due to overexploitation  (people harvesting too many of the plants and consequently damaging their ability to sustain their population).
The conservation status of C. thalictroides is secure in Ontario and New Brunswick, unknown in Quebec, and potentially at risk in Manitoba and Nova Scotia, with a country-wide ranking of secure . In the United States, it is secure except in Rhode Island where it is threatened , again likely due to overexploitation.
|C. giganteum flowers; note the distinctive blue and red tints, and the diagnostic long style|