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Perennials

All Perennials Content

Orange and yellow zinnia flowers.

Beneficial Flowers for Organic Vegetable Production Systems

Learn about a wide variety of flowers that can be planted in guard rows among vegetables to attract beneficial insects and reduce pest pressure in organic vegetable gardens.

Tulips blooming near the entrance to McCrory Gardens.

McCrory Gardens Trial Report aids in flower selection

June 20, 2023

The 2022 McCrory Gardens Trial Report, issued this spring by South Dakota State University Extension and McCrory Gardens, helps South Dakotans choose flower varieties that do well in local conditions.

Patch of phlox with white, speckles throughout the leaves due to spider mite feeding.

Spider Mites on Garden Phlox

During warm, dry weather, spider mites are a common pest of phlox, causing speckling, bronzing, and yellowing on leaves due to feeding behavior. Learn how to identify and manage infestations before they impact your garden.

Three perennial trial plants: Sedum 'Rock 'N Grow® Back in Black', Ornamental Oregano (Origanum) ‘Drops of Jupiter’, and Russian Sage (Perovskia) 'Sage Advice.’

A Look Back at Top-Performing Perennials From the 2022 McCrory Gardens Trial

Are you looking for new ideas of what to grow in your garden? Take a look at six of the top-performing perennials as judged during the 2022 growing season at McCrory Gardens.

Four top-performing perennial plants: Phlox ‘Opening Act Pink-a-Dot,’ Ornamental Onion ‘Serendipity,’ False Sunflower ‘Tuscan Sun,’ and Coral bells ‘Dolce® Wildberry.’

2021 McCrory Gardens Trials: A Look Back at Top-Performing Perennials

Are you looking for new ideas of what to grow in your garden? Let’s take a look at the six top-performing perennials as judged during the 2021 growing season at McCrory Gardens!

Three early spring blooming flowers: Chionodoxa, Fritillaria, and Helleborus.

Early Spring Bloomers

From the delicate "Glory of the Snow" to the stunning "Lenten Rose," learn about some of the beautiful, lesser-known, spring-blooming perennial flowers that can be grown in South Dakota gardens.

Glory of the Snow, Daffodil, and Allium blooming in three gardens.

Bulbs to Plant in the Fall

Fall is the time to plant cold-hardy bulbs in South Dakota gardens. This will ensure that your landscape will have a variety of color, size, and bloom types the following season.

Several Hosta shoots ready for division.

Dividing Perennials in the Fall

Dividing overcrowded perennial plants in your landscape can help ensure a long and healthy plant life. Learn which plants benefit from fall division and view a step-by-step guide for getting started!

Day lilies in bloom.

Daylily: A Summer Showstopper

Daylilies (Hemerocallis) are one of America’s favorite flowers with good reason. They are easy to grow and adaptable to just about any garden location. Learn how to select, grow and care for them in your garden!

Veronica hybrid in bloom.

Veronicas Add Variety to Your Perennial Garden

Veronicas offer gardeners a wide array of perennial plants to work into many different landscaping niches in the garden. Many are hardy in South Dakota, withstanding our cold winters as well as heat and drought.