First Lady Michelle Obama Does Letterman's 'Top Ten'

First Lady Michelle Obama Does Letterman's 'Top Ten', Michelle Obama delivers Letterman’s ‘Top Ten’ (VIDEO), Michelle Obama shares her "Top 10 Fun Facts About Gardening" on "The Late Show." First lady Michelle Obama appeared on the "Late Show With David Letterman" on Tuesday to do the "Top Ten" list, "Top Ten Fun Facts About Gardening":

No. 10: Gardening was invented in 1822 by Albert Gardener.

No. 9: Plant avocados, tomatoes, onions and cilantro together and grow a guacamole tree.

No. 8: Eggplants were originally cultivated for use as doorstops.

No. 7: In his lifetime, the average American will eat half a radish.

No. 6: The largest zucchini ever grown contained a Starbucks.

No. 5: Later this year the Supreme Court will finally rule on "tomato" vs. "tomahto."

No. 4: If you have an actual green thumb, it might be scurvy.

No. 3: Lettuce is 96 percent water and 4 percent lettuce.

No. 2: The White House tool shed contains shovels, trowels and Weed Whacker One.

No. 1: With enough care and effort you can grow your own Barack-oli.

Michelle Obama is a frequent guest on late-night television, having appeared on the "Late Show," "The Tonight Show With Jay Leno" and "The Daily Show," among others.