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Weeds & Invasive Plants

All Weeds & Invasive Plants Content

Two dandelions side by side. The left has a bee foraging on it. The right has a hover fly foraging on it..

Why Those Dandelions in Your Yard Aren’t So Bad

While research has shown that pollinators, specifically honey bees, can’t survive on dandelion pollen alone, this doesn’t mean that the dandelions aren’t still important for pollinators.

A sprayer applying liquid herbicides on corn

While Illegal in Tolerant Soybean, Dicamba Can Still Be Applied in Other Crops

While dicamba labels (i.e., Engenia, Tavium, and Xtendimax) for over-the-top applications for tolerant soybeans have been pulled for the 2025 growing season, the herbicide can still be applied in other crops. Below is a guideline for dicamba use in various crops.

Sunset over a sunflower field in South Dakota.

Sunflower Weed Management

Weed management can be particularly challenging in sunflowers.

Young farmer analyzing data on a tablet computer beside a crop sprayer.

Over-The-Top Dicamba Applications Are Not Legal in Soybean for 2025

The registration for dicamba labels for over-the-top applications in tolerant soybeans have been pulled for the 2025 growing season. Many producers are aware of the situation, but planning weed management strategies should start today.

Close-up of a plant with broad, lobed green leaves with serrated edges. The stems and veins of the leaves are a reddish-purple color and possess dark spots.

Identification and management of common cocklebur

Fact sheet to help identify and manage common cocklebur.

Patch of green giant ragweed plants growing among corn plants.

Identification and management of common ragweed and giant ragweed

Fact sheet to help identify and manage common ragweed and giant ragweed.

Waterhemp growing at he edge of a soybean field nearing harvest.

Enlist One (2,4-D) and Liberty (Glufosinate) Applied Alone or Mixed During the Day and Night: Weed Control and Soybean Yield Implications

Fact sheet on the research done to determine weed control effectiveness with Enlist One and Liberty alone and tank mixed when applied during the daytime and nighttime.

Tractor with sprayer applying postemergence herbicide to soybeans.

Current State of Row Crop Weed Management in South Dakota

Results of an online survey to determine how South Dakota stakeholders are currently managing row crop weeds.

Three yellow corn ears with a solid black background.

Another Revisitation of Using 2,4-D and Dicamba for Corn Weed Management: Application timing and rates matter

While doing some final weed control ratings this season, ears were pulled from plants in plots treated with 2,4-D, dicamba, and a standard Group 27 herbicide program pre-and-postemergence. Learn what impacts these herbicides had on the ear's size and appearance.