Yes the german armour did use any foliage they could get
you could use the search option at the top, there have been a few posts on this before in the last month
http://www.finescale.com/fsm/community/forum/topic.asp?page=-1&TOPIC_ID=28712&REPLY_ID=287230#287230
http://www.finescale.com/fsm/community/forum/topic.asp?TOPIC_ID=28027
http://www.finescale.com/fsm/community/forum/topic.asp?page=-1&TOPIC_ID=27838&REPLY_ID=279316#279316