Frames made from small trees (6)
I believe the answer is:
sashes
'frames' is the definition.
(sash is a kind of frame)
'small trees' is the wordplay.
'small' becomes 's' (abbreviation - e.g. clothes size).
'trees' becomes 'ashes' (ash is a kind of tree).
's'+'ashes'='SASHES'
'made from' acts as a link.
(Other definitions for sashes that I've seen before include "Bands around the waist or chest" , "Decorative cloth bands me father wore?" , "They're worn by men of 9 down" , "Broad bands worn over the shoulder" , "Frames holding the glass in windows" .)