Moonshine

Beth, a village girl who makes a living grinding flour, possesses a special gift: she can understand what plants need. The plants she raises are all of exceptional quality, earning her the trust and reliance of the villagers. However, one day, Beth is suddenly imprisoned under suspicion of being a “witch”! After a chance encounter born from a huge misunderstanding with the magician Noel, Beth ends up working in the greenhouse of the Royal Magic Academy, where she begins cultivating all kinds of plants—!? Zero-Sum (Official Online reading site)

Rachel, the second daughter of a viscount's family, is a shy, reclusive young lady with no interest in anything but handicrafts and magic. She had no desire to marry, but when she wore a magically modified dress that she had enchanted to her heart's content as a debutante, she was proposed to by Zoid, the court magician. Why would the nation's foremost magician, who possesses status, power, and beauty, and had previously rejected all marriage proposals, choose someone like me—!?