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Northern Corn Rootworms on sunflowers, zinnias, and dahlia flowers.

Corn Rootworm Presence in Cut Flowers

Multiple cut flower farms in Eastern South Dakota have reported corn rootworms on a variety of crops, including sunflowers, zinnias, and dahlias. Careful attention to species present, their timing, and the damage they cause can help inform integrated pest management strategies.

Gardeners browsing a tablet computer while visiting a garden center.

Home Horticulture Resources for Gardeners

Horticulture is the branch of plant agriculture dealing with garden crops. In addition to our website, there are many horticulture resources available on the web to provide research-based information to help every gardener succeed.

Annual trials garden at McCrory Gardens
Apr 07

Garden Hour

Garden Hour will return with as a limited series during the fall and winter months.

Coneflower with Aster yellows disease.

Aster Yellows Phytoplasma

Aster yellows is a phytoplasmal disease carried and introduced by aster leafhopper. It is known to infect over 80 different plant families, as the aster leafhopper has extremely broad feeding habits.

A woman with white hair bends down to check a rose plant

SDSU Extension and McCrory Gardens to feature rose trial tour and program

August 22, 2025

South Dakota State University Extension and McCrory Gardens are pleased to feature the ongoing rose garden trials and research during a special event on Aug. 25, 2025, at McCrory Gardens in Brookings.

A group of succulents
Oct 23

Bloom and Grow

SDSU Extension will host a series of workshops teaching horticulture techniques from January to October at McCrory Gardens.

A sign directs drivers to an SDSU Extension field day

SDSU Extension hosts 5th annual Specialty Crop Field Day

July 24, 2025

South Dakota State University Extension is pleased to announce its fifth annual Specialty Crop Field Day at the SDSU campus in Brookings.

Prairie pasque flowers blooming in early spring.

Native Plant Resources for South Dakota

As we continue to see the benefits of growing native plants in cultivated landscapes, finding the right plant for the right place requires the right resources. Learn about some available native plant sources, educational materials, and organizations serving our region.

Poinsettia relatives: Euphorbia horrida, crown of thorns, and Euphorbia polychrome.

The Poinsettia and Its Relatives: Exploring Unique Euphorbia Species

Euphorbias are versatile plants, with species suitable for both indoor and outdoor environments. Whether used as decorative houseplants, or as garden perennials, these plants offer a unique aesthetic, and require minimal care.

Poinsettia plant in a dimly lit living room.

Keeping Your Poinsettia Alive for Next Christmas and Getting It to Re-Bloom

With proper care, the poinsettia’s vibrant colors can be maintained throughout the year. Learn some tips for keeping poinsettias thriving and blooming again for the next holiday season.