All of these should be within reach.
Wolfsbane, known for its gorgeous purple flowers, is easy to find and easy to avoid. But it’s not the flowers that can help deal with the beasts, but the roots.
Black hellebore, mixed with fat or honey, can serve as an easy way to get rid of dangerous animals.
Henbane has a smell that seems off-putting to many animals, and while it can be used as a poison to deal with predators, the smell will need to be masked by something appetising.