How do you rid unwanted volunteers from previous crops in your vegetable gardens?
Unwanted Volunteers in Vegetable Garden
You don't say what kind of plants are volunteering. The general answer is don't let the plants re-seed. For example, don't let tomatoes or peppers stay on the ground if they fall off the vine. They will re-seed easily. There are some veggies that you eat before they flower, onion, carrot, garlic, etc. if they flower you should pick off the blooms so they don't set seed. Also, if you make compost be sure it gets hot enough to kill the seeds. A mulch of grass clippings or shredded leaves will retain moisture and reduce weeds, including volunteers.