All of these plants are at least partially edible, with the exception of wolf's bane and lily of the valley, which are poisonous.
That explains why Maomao wants to eat them.
牡丹
Botan Tree peony鳥兜
Torikabuto Wolfsbane芍薬
Shakuyaku Chinese peony山査子
Sanzashi Japanese hawthorn桔梗
Kikyō Chinese bellflower加加阿(カカオ)
Kakao Cacao鈴蘭
Suzuran Lily of the valley竜胆
Rindō Gentian