Weeding radishes will help control the places where destructive pests can hide. It will also prevent the weeds from taking precious resources – such as nutrients and water – from the plants that you want to grow, the radishes. However, pulling weeds can also pull out the crop you want to grow. If you want to weed your radishes, try to do so after a rainstorm or watering in order to soften the ground, and make it easy for the weeds to come out. Do not pull weeds if it will jeopardize the health of your radishes or if weeding will dislodge them. If needed, you can clip off the unwanted weeds with a pair of shears. If the weeds are not choking out the radishes, you may be able to leave them until after you have harvested your radishes.