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Garden & Yard Issues

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green tomato with a rotten spot showing blossom end rot

Problems and Solutions

Not finding the gardening or horticulture resource you need? Use the Ask Extension tool to submit your question.

A small spotted spurge weed in a lawn and a fully-grown mat of spotted spurge on a driveway.

A Surge in Spurge

Spotted spurge is a common, drought-tolerant weed known for its prostrate growth pattern, meaning it grows lying flat on the ground. This is one of the most-difficult weeds to control in lawns, gardens, and landscaping.

Velvet leaf foliage and seed pods.

What is Velvetleaf?

Velvetleaf is a large weed with soft leaves that’s normally associated with corn and soybean fields. However, we’re hearing more gardeners and specialty crop growers reporting its presence.

a wilted pepper plant in a garden plot.

Handling Herbicide Injury in Specialty Crops

Learn how to handle specialty crops that have inadvertently been affected by herbicides.

High tunnel covered with shade cloth with larkspurs growing in it.

Heat and Drought Effects on Cut Flower Production

Climate factors, such as drought and high temperatures, continue to pose serious challenges for specialty crop production, including cut flowers. With these challenges, farms need to take a hard look at both their business strategies and production decisions.

Metalic bronze green beetle on a green leaf

Japanese Beetles in South Dakota

In the last 10 years, Japanese beetle populations have remained low to absent in my garden in Brookings. However, last week I observed large aggregations of beetles feeding on smartweed that was present in my rain garden. Japanese beetles can be problematic for gardens, flowers, and trees in residential areas.

Dense swarm of mosquitoes in the evening sky

West Nile Virus Update: July 29, 2026

As of July 30, 2026, the South Dakota Department of Health indicated that West Nile Virus positive mosquito pools have been detected in Brown, Codington, Hughes, Lincoln, and Minnehaha counties in South Dakota.

Two coneflowers with distorted heads due to Aster yellows phytoplasma.

Aster Yellows - Plant Pest on the Plains: How you can get involved in this important research

Aster yellows phytoplasma, best known as Aster Yellows disease or Onion Yellows disease, is commonly observed in purple coneflowers across the Great Plains. SDSU Extension is monitoring and modeling its distribution in the region, and you can help!

Gardening plots at the Foundation Field Community Garden.
Aug 06

Community Garden Field Day @ Watertown

SDSU Extension will host a Community Garden Field Day on Thursday, August 6 from 6:00 to 8:00 p.m. CDT at the Foundation Field Community Garden (1800 3rd Ave. NW, Watertown, SD 57201).

Nearly microscopic elongate organism.

Springtails Are Active in South Dakota

Recent reports of seemingly millions of very small insects moving around on driveways and around homes was the result of a springtail population boom. Springtails typically become a nuisance during drought conditions or saturating rains.