Acorns

Acorns are an item that can be planted using the cultivator to produce new oak trees. Once planted, seeds take a few in-game days to grow to full size. Seedlings require a small amount of space directly around where they are planted; if they do not have enough space, they will not grow into full trees.
ru:Желуди
uk:Жолуді
cs:Žaludy
de:Eicheln
fr:Glands