Where do you get turnips from in Animal crossing lets go to the city?

Every Sunday from 6:00 AM to 12:00 AM, a boar named Joan comes to your town. She sells white turnips and red turnips. You can sell white turnips to Tom Nook every day (except Sunday.) Prices go up and down for white turnips each day, so check what the price is every day, and be sure that you sell the turnips for a higher price than you bought. Joan also sells red turnips. Plant red turnips in the ground just like one would plant a fruit tree. Water the red turnips every day or else they will dry out and be useless. However, a silver watering can revives withered red turnips. Sometimes, Joan says she doesn't have any red turnips. This is probably because the date or time on the game doesn't match the date or time on the wii that it's being played on. Hope this helps!