Based near the town of Merced in the Central Valley, which produces over half of the fruit, vegetables and nuts grown in the United States, the Sisters of the Valley grow and harvest their own cannabis plants.
The sisterhood stresses that its seven members, despite the moniker, do not belong to any order of the Catholic Church.
"We're against religion, so we're not a religion. We consider ourselves Beguine revivalists, and we reach back to pre-Christian practices," said 58-year-old Sister Kate, who founded the sisterhood in 2014.
The group says its Holy Trinity is the marijuana plant, specifically hemp, a strain of marijuana that has very low levels of Tetrahydrocannabinol (THC), the psychoactive compound in the plant.