Is Maca a nightshade vegetable

No, maca is not a nightshade vegetable. Maca (Lepidium meyenii) is a root vegetable native to the Andes mountains in Peru, and it belongs to the cruciferous family, related to vegetables like broccoli and kale. Nightshade vegetables, such as tomatoes, potatoes, and eggplants, belong to the Solanaceae family. Thus, maca and nightshade vegetables are from entirely different plant families.