Stardew Valleyplayers have alot to lovewhen it comes to the game’s farming systems. Each season offers severalnew cropsto purchase and cultivate, and with the game featuring somemega-cropsfor truly dedicated farmers, the plant-grow-sell cycle rarely gets old.

For players looking to prove their farming expertise and mastery of the seasons, there’s no better way to achieve that than unlocking the Polyculture trophy / achievement. Requiring players toship 15 of each crop, unlocking this mark of status isn’t as difficult as it first appears. However, it may still take players multiple in-game years to unlock. This guide will help players identify which crops they need to harvest and explainhow their seeds can be obtained.

Stardew Valley farm with crops.

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Which Crops Are Needed?

The Polyculture trophy / achievement’s description makes it sound like every single crop in the game must be shipped fifteen times. However, that’s not true. Only28 specific cropsneed to be grown and sold fifteen times, with some only being obtainable after at least a year in the valley. Most crop seeds can be obtained in multiple ways. The tables below show the most reliable sources of each crop; additionally, there are a few tips players should keep in mind.

Default time until harvest

Stardew Valley collections tab with coconut selected

How to get seeds

Purchase from Pierre for 20G

Purchase from Pierre for 60G

Purchase from Pierre for 80G

Purchase from Pierre for 50G

Purchase from Pierre for 70G

Purchase from Sandy for 100G

May appear in the Traveling Cart’s stock for 2500G

Purchase from Pierre’s stand at theEgg festivalfor 100G

Purchase from Pierre for 40G

Purchase from Pierre for 10G

Purchase from Pierre for 150G

Purchase from Pierre for 100G(AFTER year 1)

Purchase from Sandy for 400G

Purchase from Pierre for 100G

Purchase from Pierre for 240G

Purchase from Sandy for 20G

Can The Achievement Be Tracked?

It can be easy to forgetwhich cropshave or have not been sold, but players don’t need to worry. By visiting the ‘collections’ tab of their inventory, items that have been sold will appear in color. Players can then see the exact number of that crop that they have sold byhovering over them. Even if the item has been collected, it won’t appear unless it’s been sold via the shipping bin.

Players can also use this system to track their progress towards the Monoculture trophy / achievement, as well as seeing whichfish they have left to catch. When fifteen of each of the 28 needed crops has been sold, this trophy / achievement will unlock.

Stardew Valleyis available on Windows, Mac, Nintendo Switch, PlayStation 4, and Xbox One.