Instruct: Classify Amazon reviews into positive or negative sentiment
Query: good all purpose book about plants

I recieved this as a gift. It's great how many types of houseplants it covers. I now know how to care for my dwarf umbrella tree, which I bought at Walmart and had no idea how to take care of before this book. It has also inspired me to try different types of plants like dumb cane, dracenas, and palms.However, I would like to see more info on orchids. It only briefly touches on them, and they are so variable that you need information about how to grow each type. It would be better to see the more common types of orchids each get their own page. E.G. a page for Phalaenopsis, a page for Cattleyas and related genera, a page for Oncidiums and related genera, and a page for Cymbidiums. Granted, this is not a book about orchids, but I wish it devoted more pages to them.