Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Worth having for the details.

If I remember correctly this was a bit pricey for the amount of information it contains, but then again it goes to a good cause I believe...I hope seed savers. Anyway, it gives some real particulars like varieties and growing region that I found very helpful. Even a tip about saving tomato seeds I never knew after 38 years of gardening. It explained my low germination rate! If you are going to save seed from year to year it is a must have.