You'll want to focus on strawberries if you can get them at the egg festival on spring 13, they're amazing for early profits with multiple harvests every 4 days. For summer, blueberries are your reliable money-maker but if you've fixed the bus, starfruit from the oasis is absolutely worth the 400g investment per seed, especially if you process them into wine.

The real profit powerhouse starts with ancient fruit once you get it going, takes 28 days to mature but then you're looking at harvests every week which is perfect for greenhouse growing. Fall gives you solid options with cranberries, they might need a bigger upfront investment at 240g per seed but the constant regrowth makes up for it, and pumpkins are great for single harvests.

Just remember that processing most crops into wine or jelly seriously boosts profits, and if you're planning greenhouse strategies ancient fruit is basically unbeatable once established. Something interesting about melons and pumpkins - they can form giant crops if you plant them in 3x3 patterns, giving you extra produce. For year-round planning, the oasis crops like rhubarb and starfruit need the bus repair first but they're worth the wait, especially when you start processing them.