As seen on a couple of different lists...

FENNEL: You’re quiet, sometimes shy, with a tendency to be reserved. You have a humble, kind nature and often find yourself taking care of others. You can be known to hold things in, and you don’t always speak up for yourself. This tendency to hold things in can lead to disturbances.

NETTLE: Truly a nurturing and supportive friend, you’re the kind of person that just isn’t for everyone. But those who take the time are rewarded with your gentle disposition, and the kind of friendship that does a person good no matter the difficulty they’re facing. When out of balance, you can become more prickly than supportive or nurturing, though—a sign that you need to shower yourself with the same kind of nurturing you so freely give to others.

PEPPERMINT: Unflappable. You are cool in the crisis, calm in the storm, collected amongst the chaos. You’re a breath of fresh air, a waft of inspiration to the down-and-out, a refreshing, inspiring, uplifting person to be around. Of course, even a cool cucumber like yourself can run into trouble. You may try to take on too much, which can leave you feeling weighed down and not quite yourself.

[http://www.traditionalmedicinals.com/plant-personality-quiz/]