Types of trees

There's the soft wood,
which is easy to break,
you can't break the hard wood,
you can't even use a big blue rake.
There's the smooth wood,
good to sleep on,
there's the rough wood,
rough it is but not buff.
Theres the cold wood,
a lot colder when wet,
theres the hot wood,
it's very hot I will bet.
There's the blue wood,
blue splattered making it dark,
there's the red wood,
red all along the bark.
There's the thick wood,
they are really big,
there's the thin wood,
good climbing for a pig.