Wood that's cared about (5)
I believe the answer is:
cedar
'wood' is the definition.
(I know that cedar is a type of wood)
'cared about' is the wordplay.
'about' indicates anagramming the letters.
'cared' is an anagram of 'CEDAR'.
'that's' acts as a link.
(Other definitions for cedar that I've seen before include "Tall conifer" , "Leaving body" , "Tall coniferous tree" , "Tree giving fragrant wood" , "Raced around a mighty tree" .)