Corner house + double lot + 10-foot parkways = whole lotta lawn. And that lawn had been ignored for years when we bought the house. Moving in, we admired the pretty white flowers covering the grass. Uhhh. Yea. Those would be bindweed flowers. Bindweed, nicknamed "Devil's Guts," is an invasive weed with roots 20 feet deep and 30 feet wide. Or more. Even the tiniest bit of root propagates a new plant. Not that that's necessary: the seeds are viable for 60 years. Once I realized what a monster it was, I knew I had to get rid of it. So, being a devout organic gardener, I tried heavy mulching, black-plastic solarization, clear-plastic solarization, hoeing, tilling, pepper spray, vinegar spray, weed torches, salt, soap, hand pulling, and ultimately hair pulling. I kept reading cheery accounts of how these methods worked on any weed, but my 7,500 square feet of heavy, well-established infestation gave not an inch. So I began reading up on chemicals. It's a class