Have a small area where you want to plant wildflowers? Concerned about weeds? You should be, even in planting sites where weeds don’t seem like they will interfere with establishing and managing your wildflower garden. An abundance of weed seeds can lurk in the top few inches of soil just waiting for some sort of disturbance. And from the weeds point of view, disturbance can range from tilling the soil to eradicating existing vegetation with an herbicide.