Crabgrass and weed preventer for lawn and landscape areas. Provides season long, superior control of crabgrass and other grassy weeds. Contains sulfate of potash and Dimension. Ideal for use on cool and warm season grasses. Controls or suppresses many annual grasses and broadleaf weeds. Can be applied up to 4 weeks later than other pre-emergence crabgrass preventers. Kills crabgrass before and after it germinates, up to the 3-leaf stage. Labeled for use on over 100 ornamentals. Delay seeding for 4 months after application. Active ingredient: dithiopyr: 3.5-pyridinedicarbothioic acid. Glyphosate-free.