Yellow Alyssum

A member of the Mustard Family, like Hoary Alyssum it is an early bloomer, appearing in late April and May.  A short plant, 2”-6” which spreads throughout grasses, especially in poor soils. Heavy infestations will appear as a yellow carpet in lawns and pastures. Mowing is generally not effective as the plant will flower below the stubble level. It spreads by seeds which it produces in prolific amounts. April and May applications of herbicides containing metsulfuron are effective, however multiple year treatments may be required to eradicate the seed base.