"Q: In a recent column (Nov. 13) you answered a reader who was reluctant to use the herbicide Roundup to combat Japanese anemone. Why? Is it poisonous? I thought it was a salt that got into the plant root and destroyed it. I found it great to control my neighbor's bamboo from invading my yard. I cut the stalk when approximately 18-24 inches tall, then squirt some Roundup down the hole in the stalk. Within a week or so, the bamboo dies. (Until another stalk shoots up!)"