크로바(토끼풀)나 긴병꽃풀, 그리고 자운영을 심으세요~~

http://100.daum.net/encyclopedia/view/49XX11800277

http://100.daum.net/encyclopedia/view/174XXXK006961

http://cjapple.woweb.net/bbs/zboard.php id=news&no=19

http://100.daum.net/encyclopedia/view/74XXXXX53464