Century after century, weeds have prospered at man's expense, using the favorable habitats furnished with

every expansion of agriculture. On this continent, the felling of forests and plowing of prairies paved the way for hordes of immigrant weeds that have invaded our fields, roadsides, gardens, and lawns. Today these plant pests take an annual toll from each of us, directly or indirectly.

Until recently, no one bothered about the name of the plants he destroyed. They were simply "weeds." That

was all that really mattered. Now that herbicides have largely replaced the hoe and other mechanical means of control, recognizing the different kinds of weeds has become essential. Why? Because, to get desired results, specific chemicals must be used on particular kinds of weeds. This book aims to help meet the new need by

acquainting readers with the most important of our unsightly, unwanted, or despised botanical intruders.