A very subjective term based on YOUR deer’s pallet I guess. However, the rule I have learned over the years is that deer don’t like FUZZY leaves. Got that? So when shopping for flowers look at the leaves and see if they have FUZZ on them. Bring your phone with you and Google… are XXXXX flowers deer resistant? Many deer resistant flowers are not label that way in the stores.
Also keep in mind… like the video states, while the deer may not eat the leaves and stems, they may eat the flowers or buds. Lilies are a great example of this. Deer won’t touch them until the buds appear them whammo… down they go.