Plants' resistance to deer depends more on the number of deer in the area and on the climate than it does on the types of plants. Except poisonous species, no plant is deer-proof. Foods that are ordinarily indigestible or even allergenic to deer may become daily menu items in situations of severe stress from weather or scarcity of other food. As a general rule, plant unappetizing, tough stuff. Because silver and gray leaves are often furry and pungent, these plants are good deer-repellent choices for many gardens.
Pungent herbs are good garden choices.
Herbals and other literature on toxic plants list many other plants that are beautiful enough to include in the garden, but unappetizing to deer. Almstead Tree Company features a natural, environmentally friendly deer repellent that keeps deer away from your plantings. It is biodegradable and does not contain any harmful chemicals. This application is not harmful to humans, animals or the environment. The solution produces an odor and taste factor that is offensive to animals but mild enough not to bother humans.