An annual or winter annual that reproduces by seeds. The first flush develops as annuals and the second develops as winter annuals. Sporadic emergence occurs at other times. Flowers Annuals flower from early July through August. Seeds from annuals mature from early August through fall.
Seeds exhibit little or no dormancy, losing their ability to germinate after about five years.
The most serious infestations of this weed occur in weak crop stands. Management Strategy Prevent seed production and encourage strong crop stands. However, plants can easily re-root after tillage, especially in wet conditions. Consequently, tillage should be done during hot, dry weather. Perform tillage after the main flushes of annuals appear and in the fall to destroy rosettes of winter annual.