Thanks for answer, Spider.
It's not Storyline quest. I took this quest from the traider. It can be seen in the save picture of the attached files. This POI looks like a remade "" Favales Academy".
When I asked about seeds I thinked that craft as vanilla : 5 harvest item=1 seed. In this case farming would be useless.
Now I see : 1 harvest item=2 seeds. And using fertilizers and constantly planting and harvesting, you can increase the yield several times. 😀
I tried to upgrade Spike Trap Starter before. But aimed the Stone Axe at the center, but it was necessary to at the base Trap.
Cool mod. One feels that its features are thought out and have a logical interconnection. 👍