I made a little guide to crops profitability using data from the wiki. I'll leave it here in case it can help others. : r/StardewValley
Plant cheap crop or wild seeds a few days before the end of season. The plants die next season but leave behind tilled (and watered if sprinklers) ground saving you a lot
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GUIDE] Last day to plant crops Calendars! : r/StardewValley
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