DK Publishing, Inc, <br/><br/>
RHS Good Plant Guide : 

 -  Penguin Books, Limited (UK),  2004. 
 - 704 pages 
<br/><br/><label>ISBN: </label>9781405300681 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gardening.
<br/><br/><label>Dewey Class. No.: </label>635.9  / LEE