Its about Polish version of the game.
1.All gardens are plural so a tree garden should be "Ogród drzew" instead "Ogród drzewo".
2.The clan tree is also misspelled, there is "Klan drezewo" but should be " Drzewo klanu". Even if you correct the second word "drzewo" and there will be "Klan drzewo" it doesn't sound very good.
These spelling mistakes have been there for so long that I don't even know how long, but maybe it's time to correct them.