This is Witch-Gertrud, one of the Witches of Puella Magi Madoka Magica!.

The rose garden witch with a distrustful nature. She holds roses dearer than anything else. She expends all of her power for the sake of beautiful roses. Despite stealing the life-force of humans who wander into her barrier to give to her roses, she loathes the thought of them trampling the inside of her barrier.

Here's a battle, https://www.youtube.com/watch?v=ARhHq-aw5DI