Spanish needles are self-pollinating, but they still attract pollinators. One plant can produce between 3,000 and 6,000 highly viable seeds with no dormancy requirement.
Photo courtesy of UF/IFAS

Florida pusley and its relatives, Brazilian and large-flower pusley, are common sights in citrus groves.
Photo by Rebekah Wallace

This weed is a large perennial bunch grass that is native to Africa and Yemen. It has been introduced in the tropics around the world.
Photo by Tony Pernas

Goatweed (Scoparia dulcis), also referred to as sweet broom and licorice weed, is a perennial plant that has been a problematic weed in citrus groves for many years.
Photo courtesy of UF/IFAS

Dayflower is an herbaceous annual plant in the dayflower family. It gets its name because the blooms last for only one day. It favors open areas and moist areas in groves.
Photo by Wendy VanDyk Evans

This grass flourishes in sites with full, direct sun and good drainage. It has superior heat, salt, and humidity tolerance.
Photo by David Stephens

Parthenium is a genus of North American shrubs in the sunflower tribe within the daisy family. The annual herb has a deep tap root and an erect stem that becomes woody with age.
Photo by John Ruter

Nutsedges thrive in almost any kind of soil. While they prefer moist soil, established nutsedge plants will thrive even in dry soil. They spread by small tubers, by creeping rhizomes or by seed.
Photo by Howard Schwartz