Whilst it is yet in his greenness
'eb (abe)
a green plant -- greenness, fruit.
and not cut down
qataph (kaw-taf')
to strip off -- crop off, cut down (up), pluck.
it withereth
yabesh (yaw-bashe')
to be ashamed, confused or disappointed; also (as failing) to dry up (as water) or wither (as herbage)
before
paniym (paw-neem')
the face (as the part that turns); used in a great variety of applications (literally and figuratively); also (with prepositional prefix) as a preposition (before, etc.)
any other herb
chatsiyr (khaw-tseer')
grass; also a leek (collectively) -- grass, hay, herb, leek.