People who grow CBD flower to manage a health issue need the same result harvest after harvest, which is a much harder ask than one good crop. Seed grown plants vary, so the practical answer is to find one pheno you like, keep it as a mother and grow only cuttings from then on. Notes on which CBD lines have proven stable enough to reproduce reliably from seed are shared by long term users on https://calmcbdseeds.com (https://calmcbdseeds.com). Lab testing every batch is the other half of the job.