The trees work exactly as intended.

ok, but the juice can be created without an empty bottle using only 1 apple. At the same time, the juice costs 115 pixels and 1 apple costs 4 pixels. At the same time, trees grow in 5 minutes. Making juice is getting too dishonest from my point of view.
it may be necessary to change the price of juice...by about 10 pixels

So you want to make fuel even harder to get earlier on? When it's enough of a grind that slows travel to a crawl as it is? People use apples and wood to make hydrogen so that the ship can move. Forcing players to use glass would crush travel times even more than they already are.