WEEDS

The state of Minnesota has launched an advertising campaign designed to inform livestock producers of the dangers of purchasing sunflower screenings, non-certified hay and other feeds from out-of-state, including North Dakota, because of the Palmer amaranth threat. State officials say the concerns are particularly strong at the Red River border between Minnesota and North Dakota, where several counties have Palmer amaranth infestations. The danger is particularly acute for the sugarbeet crop, which has few chemical tools to fight it.

Gardening columnist Don Kinzler says the products that aid in controlling weeds can also cause unintended harm — sometimes putting the user in legal jeopardy.

Gardening columnist Don Kinzler offers advice on a squash vine infestation, as well as how to kill creeping Charlie in lawns and ways to prevent green areas on potatoes.