Mayweed, also known as Anthemis cotula, is a widespread and invasive weed found in gardens and lawns across the United States. It has small, yellow daisy-like flowers and can grow up to 12 inches tall in ideal conditions, such as full sun and moist soil. Mayweed is a pesky weed that spreads quickly and is hard to eradicate when it takes root. This weed is primarily spread by its tiny, wind-blown seeds, which is why it can be spotted in almost any outdoor area. The golden petals of mayweed form a star-like pattern, making them easy to identify.
Mayweed is especially abundant in areas with sandy soils, such as coastal regions. Its shallow roots make it fairly easy to remove by hand or with a hoe, however care should be taken to ensure all the roots are removed, otherwise it will grow back. Pre-emergent herbicides are also effective against mayweed, though some post-emergent chemicals may provide better control of the weed.
While mayweed may not be the most attractive of weeds, it does attract beneficial insects such as bees and butterflies. Additionally, the leaves can be used to make an herbal tea believed to have medicinal properties. While mayweed may be an annoyance in the garden, it does provide natural beauty and can even be beneficial in certain applications.