More languages are coming in a future update of the site.
Machine-converted from Simplified Chinese
Leaf
Leaves come from your garden beds: every harvest drops 2, whatever the crop. Their use is compost. With Fertilizers I (10 green) you get a Compost Pile, which turns 8 Leaves into 2 Peat, so every Peat costs 4 Leaves, or two harvests.
Peat is worth having: put in a garden bed’s fertilizer slot before it grows, it makes the bed’s growing steps succeed more often (see Carrot). Ten Peat also go into Garden Upgrade I, which makes every bed grow better. The Orchard takes another 10, but it stays empty in the demo, because nothing can be planted in it.