Plant is brave, spreading around space (7)
I believe the answer is:
verbena
'plant' is the definition.
(verbena is a kind of plant)
'brave spreading around space' is the wordplay.
'spreading' indicates an anagram.
'around' indicates putting letters inside.
'space' becomes 'en' (in printing, a space as wide as a letter 'n').
'brave' anagrammed gives 'verba'.
'verba' going around 'en' is 'VERBENA'.
'is' acts as a link.
(Other definitions for verbena that I've seen before include "Vervain (plant)" , "Herbaceous plant" , "Garden plant" , "Ornamental plant with showy flowers" , "Ornamental pant" .)