Plants do communicate with chemical signals.
http://rspb.royalsocietypublishing.org/content/280/1756/20123062
http://www.bashanfoundation.org/heil/heilexplainig.pdf
http://link.springer.com/article/10.1023/A:1020553531658#page-1
Plenty of other studies showing that too....
http://rspb.royalsocietypublishing.org/content/280/1756/20123062
http://www.bashanfoundation.org/heil/heilexplainig.pdf
http://link.springer.com/article/10.1023/A:1020553531658#page-1
Plenty of other studies showing that too....