Add cardboard boxes to the game so that Yumako can be packed.
Packaged crops will not rot for a while.

Once you unlock Yumako Jellynut and in Greva, you can research packaging technology.

Adaptable to:

• Yumako
• Jellynut
• Agricultural-science-pack

Keeping Time : 48 hours. (very long, but, it does not mean that it will not rot!)