Instruct: Classify Amazon reviews into positive or negative sentiment
Query: An excellent reference for creating the tropical look.

Riffle has gifted serious plant collectors and those seeking to create the tropical ambience in their summer gardens, no matter what zone. Deservedly an AHS award winner, Riffle's book details in layman's language what to expect from thousands of exotic plants that we can enjoy on our own turf. A must for the adventurous gardener and the pro wanting creating their own gardens of Eden.