ağaç

/ aʁatʃ /

Cases

SingularPluralWhen to use it
nominative ağaç the tree ağaçla the trees the plain dictionary form — the doer of the sentence
genitive ağaçnı the tree's ağaçlanı the trees' the owner — whose it is
accusative ağaçnı the tree (as the object) ağaçlanı the trees (as the object) a specific, known object — whom or what
dative ağaçha to the tree ağaçlağa to the trees direction or recipient — to where, to whom
locative ağaçda at / in the tree ağaçlada at / in the trees where it is; also having — mende bar, "I have it"
ablative ağaçdan from the tree ağaçladan from the trees where it comes from; also "than" when comparing

The endings are the same ones the pronouns wear — that page explains when each case is used.

With an owner

One ownedSeveral owned
my ağaçım my tree ağaçlarım my trees
your ağaçıng your tree ağaçlarıng your trees
his / her ağaçı his / her tree ağaçları his / her trees
our ağaçıbız our tree ağaçlarıbız our trees
you all's ağaçığız you all's tree ağaçlarığız you all's trees
their ağaçları their tree ağaçları their trees

The overlap in the last rows is real, not a mistake: ağaçları can mean "his / her trees", "their tree", or "their trees" — context decides.