Difficulty Managing Ragweed
ALS Inhibitor and Glyphosate Resistance
- Cotyledons leaves are round, thick and large with purple hypocotyl.
- Hairy stems.
- True leaves are opposite, three- or five-lobed, hairy, with toothed edges and can be 4” to 8” wide by 6” long.
- Small, green flowers, but crop experts urge growers not to let giant ragweed get to the flowering stage.