Guerrilla Gardening

I picked this book up the other day... the author, David Tracy, says,
I decided to write Guerrilla Gardening: A Manualfesto to join the growing campaign to help cities bloom. By combining what I've learned through reporting from urban areas on six continents with what I studied about urban ecology and tried firsthand as a community planner and activist, I hope to make the case that:
1.Cities are too important to leave to people who don't care.
2. Gardening is easy, although sometime tricky when you don't have permission.
3.The planet can be saved by committed gardeners because
4. We are planting the seeds of a brighter future and
5. Our time has come.

"The phenomenon by which the sunflower's head can follow the movement of the sun throughout the day is known as heliotropism"