By Julie Chai, Sunset associate garden editor

If you love Michael Pollan’s work as much as we do, you’ll want to see The Botany of Desire, a TV special based on Pollan’s book of the same name.

Focusing on four crops—apples, tulips, cannabis, and potatoes—the show explores how the plants may very well be exploiting us instead of the other way around. And it’s packed with interesting factoids. Some of my favorites (that won’t spoil anything for you if you’ve not read the book):

• Most apples in the wild aren’t sweet, and are basically inedible. (And Johnny Appleseed isn't quite the person you thought he was...)
• During the Dutch “tulip mania” in the 1600s, tulips were valuable commodities that signified wealth—bulbs of one variety cost $10 to 15 million each in today’s dollars.
• Cannabis extract was found in many over-the-counter medicines and was basically available anywhere before states starting outlawing it in the early 1900s.
• We might think we have a lot of choices between Idaho russet, Yukon gold, fingerling, and red potatoes. But in Peru, where spuds were first domesticated, people still cultivate more than 5,000 varieties.

The Botany of Desire airs on Wednesday, October 28 at 8 p.m. on PBS.