| Author | (L.) Persoon | |
| Distribution | Throughout the state; no doubt in every county.
Native of the Mediterranean region; in N.A. mostly in the southern 4/5 of the U.S. | |
| Abundance | Common to often abundant -- a noxious weed of waste places. | |
| Habitat | Roadsides, fields, meadows, pastures, crop fields, waste places. Fortunately, this weed tends to not invade natural habitats, though it certainly can outcompete smaller native herbs that inhabit disturbed ground. | |
| Phenology | Flowering and fruiting May-November. | |
| Identification | Johnson Grass is a very familiar roadside weed, growing up to 6 or 7 feet tall from tough horizontal rhizomes. The leaves may reach 3 feet and taper gradually to the tip. The inflorescence is roughly triangular in outline, rather open, the main branches well-spaced. Note the prominent awn on each spikelet and the reddish color of the inflorescence. | |
| Taxonomic Comments | None
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| Other Common Name(s) | | |
| State Rank | SE | |
| Global Rank | GNR | |
| State Status | | |
| US Status | | |
| USACE-agcp | FACU link |
| USACE-emp | FACU link |
