Common Bermuda Turf Weed Solutions
Annual bluegrass grows to a height of 6 to 8 inches when left unmowed. It has light green, flattened stems that are bent at the base and often rooted at the lower stem joint. Leaf blades are often crinkled part way down and vary from 1 to 3 inches in length with typical Poa, boat-shaped leaf tips. The inflorescence (flowering structure) is a terminal panicle that varies from 1 to 4 inches in length. Seed head initiation can start as soon as plants are 6 weeks old in early fall and continue until early summer, but most seed heads are formed in spring. The annual form of annual bluegrass is a rapid and prolific seeder.
QUINCLORAC, CELSIUS WG
Crabgrass (Digitaria species) seedlings appear from mid-spring through summer in many types of soils. This fast-growing annual needs only warm rain to coax seeds to life. Where crabgrass infestation is severe, apply a Prodiamine or Dithiopyr product, keeping in mind that it will inhibit the growth of all types of newly germinated seeds. From late spring onward, pull seedlings from moist soil, or cultivate when soil is dry. Mulch to reduce seed germination and space plants close together to crowd out seedlings that emerge. Mow weedy areas near your garden to reduce reseeding.
Dallisgrass is a coarse-textured grass that grows in a clump and slowly increases in diameter as its shallow, underground stems (short rhizomes) grow outward. the rhizomes have short internodes (the length of the stem between the joints) that look like concentric rings on its surface. The presence of these distinctive rhizomes is a good way to distinguish dallisgrass from other common clumping grasses in lawns, such as crabgrass. As the clump matures, the center may die and a different grass or weed may be growing in its center.
Although nutsedges resemble grasses and often are referred to as nutgrass, they aren ´t grasses but are true sedges. Their leaves are thicker and stiffer than most grasses and are arranged in sets of three at their base; grass leaves grow across from each other in sets of two. Nutsedge stems are solid, and in cross section they are triangular; grass stems are hollow and round, and in cross section they are almost flat or oval. Nutsedge has three long, leaf like bracts at the base of each flower head. Yellow nutsedge has light brown flowers and seeds. Sedgehammer
Both are winter perennials, with wild garlic being predominant in South Carolina. They emerge in late Fall from underground bulbs and grow through the Winter and Spring. In late Spring, aerial bulb lets are formed and the plants die back in early Summer. The underground bulb persists in the soil for several years. While both have thin, green, waxy leaves, those of wild garlic are round and hollow, while those of wild onion are flat and solid. Unfortunately, there are no pre-emergence herbicides that will control wild onion or wild garlic. They must be treated with a post-emergence herbicide, and persistence is the key.