There are two basic types of weeds that appear in lawns: Broadleaf & grassy weeds. Below are a few of the most common weeds in treasure valley turf.
Dandelions are broadleaf weeds with multiple spear-like leaves, tell-tale yellow flower, and seed head that produces parachute like seeds that float easily along the wind. Probably the most prolific weed in treasure valley lawns, dandelions compete with your turf grass for vital nutrients and sunlight.
Crabgrass is an annual grassy weed, meaning it germinates and dies within one growing season. Crabgrass germinates from seed in April-May and thrive in the heat of the summer. Crabgrass grows low to the ground, the stems spread out like the legs of a spider. Adult crabgrass produces seed, and is then killed by typically the first hard frost of the year. Seeds survive the winter, and the whole process starts over again.
Canada thistle is an aggressively growing prickly broadleaf weed. Canada thistle is a very successful weed that spreads through common root system. Without treatment, Canada thistle can take over a lawn, becoming the dominant plant in the area.
Mallow is a deep rooted broadleaf plant with stems that spread out in a sprawling manner. Leaves are heart or kidney shaped, with white or pink flowers.