At the same time, these favorable conditions spur a new flush of weed growth. Some weeds, like henbit and dandelion, quietly germinate in the fall and overwinter as tiny seedlings that will become robust lawn weeds in spring. Here are the most common lawn weeds that pop up in fall and how to minimize their impact on your grass. While fall growth is limited, the plant grows with gusto in spring when chickweed produces its tiny, white daisy-like flowers. However, if you want to get rid of it, fall is the time to act when white clover takes root.