Daisy Mae will arrive on your island every Sunday morning between 5AM - 12PM (midday). You can buy turnips in bunches of 10. I have a Reddit Custom Feed to help with buying and selling: https://www.reddit.com/user/cutielou22/m/turnips/
Selling To Nook Twins
The Nook twins will offer you two separate turnip prices a day. One before 12pm midday, and one after midday. Each day, the shop will offer a different two different prices for your turnips. The game is to take a gamble on what you think will be the highest price each week and where you can make the most profit. In total, you'll have 12 different prices throughout the week, so it's a complicated game to play.
Rotten Turnips
If you don't sell your turnips by the next Sunday, they will rot and become worthless. Rotten turnips will attract flies and ants, which you'll then be able to take off your bugs list.
Bamboo Shoots
Daisy Mae will mail the player Bamboo Shoots if the following requirements have been met:
Buy Turnips from her on 3 different weeks.
Buy an aggregate total of at least 100 Turnips.
Once the requirements have been met, then every time the player purchases from her afterwards, she will mail 3 Bamboo Shoots the next day.
Daisy Mae also mails the player one of the following cooking recipes after they have purchased some turnips: Bamboo-Shoot Soup, Jarred Bamboo Shoots, Kabu Ankake, and Turnip Salad.
Good Basic Hosting Rules (for Reddit)
Taking 2-4 people at a time. I will comment if you are next. Then DM you the DODO code when ready for you to come.
Only 1 trip allowed at first. Let me know if you need more, I will allow if not to busy.
Feel free to fish, explore and/or shop. All I ask is to NOT run on my flowers.
I have all the fruit. Come visit my orchard if you need any. It's located in the top right corner. (The only one missing in the orchard is Peaches and they can be found through out the island - they are my native fruit.)