Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great medicinal grower's guide

If you're interested in medicinal herbs, being able to take care of yourself holistically, or even just in preserving endangered plants this is a great book to own. It not only tells you where you can get the seeds or plants, how to grow them, how to harvest them (which is detrimental to the value of many), but it offers information, as well and if you're interested, in trying to sell some once it's been grown from your garden (it gives an idea on sales value and what market's apt to buy what). It also tells which herbs are used for what, and by who. Plus it throws in some yummy and medicinal recipes too.