An ash tree.
Ski.ski
rash, flash, stash, mash
mishmash, mash, cash
The tree that rhymes with "three" is a birch tree.
Clashes Dashes Mashes
Spruce is a tree name that rhymes with goose.
Tree
cast fast, mash, last crash, dash, smash, splash, hash
smashed flashed bashed dashed
the only tree i can think of is a fig tree
Styrax
Bough.