Yes, you can buy Beets in your first year, depending on how efficient you are when it goes to completing your Community Projects. All the player needs to do is gain access to the Bus Repair project, which means the player needs to complete the Vault community center bundle. If you do that, then one simple bus ride will take you to the Oasis shop, and you'll be able to purchase these seeds from Sandy. However, this isn't the case for all crops in the game. Some of these crops are only available in Pierre's General Store (or the Joja Mart) in your second year. If you are wondering what these are, here is a quick list below:  • Red Cabbage • Artichoke seeds • Garlic Seeds