ScientificName: Digitaria sanguinalis
Description: Crabgrass is an annual grass that germinates when the temperature rises above 55 degrees and there is plenty of sunlight. One plant can produce 150,000 seeds.
Organic Control: Use an organic preemergent in the fall and in the spring such as corn gluten meal to stop any new germination from occurring. 20% Vinegar or other acid based weed control products can kill the foliage of any currently established weeds.
Interesting Fact: Just one weed can produce 150,000 seeds.