The Bursera graveolens variety of Palo santo is not endangered. However, its relative Bulnesia sarmientoi is listed as endangered. Make sure you check with your supplier the species of Palo santo before you make a purchase. The forests in which Palo santo grows are being cut down at a highly irresponsible rate for industries like farming and logging. If you use Palo santo, ensure it comes from a sustainable source.