Its leaves contain coumarin, which is useful for bad breath and as a sweetener for tobacco. Lavandula Vera and Hyssopus Officnalis are capable of reclaiming natural, dry slopes. Lavandula is used for its scent in perfumes, scented cremes, etc. Hyssopus is used as a poultice to remove discoloration around black or bruised eyes. There are also biotic factors like fungal, bacterial, and viral infections, insects and the deposition of eggs, grazing, browsing, trampling and fire.
Genetic factors are also important.