Mame to Chikkoi no: Majo Minarai no Shoujo wa Hachiue wo Te ni Tokotoko Aruku @comic

Mame, a young girl living deep in the forest with her witch mentor, officially became a witch apprentice today. Possessing the incredible talent of a "five-star" witch in manipulating plants, she's filled with excitement at the prospect of using magic for the first time. She immediately infuses her magic into a mandrake seedling... and pop! it grows instantly and begins to move like a tiny person!?

"Piki!"
"What is it, um, you're a new mandrake, aren't you?"

With the help, healing, and sometimes disruption of her life, she continues her witch training, now that she's named Gorapii. Then, a request for healing arrives from the royal capital...?

https://www.cmoa.jp/title/319734/