Theresa Thorne from kwa’mutsun shares some information on douglas fir

ts’sey’, ts’sey’ulhp

douglas fir

nilh p’e’ xut’ustum’ ts’sey’ulhp.
That’s what is called ts’sey’ulhp. 

tun’a ’uy’ ha’kwushum’ tthu huy’qw nilh nuw’ huy’qws ni’ ’u tthu thi lelum’.
It’s good to use for fires in the longhouse.