Perennials

All Perennials Content

A grove of white flowers with yellow centers

McCrory Gardens Trial Report aids in flower selection

April 30, 2026

The McCrory Gardens Trial Report, issued annually by SDSU Extension and McCrory Gardens, helps South Dakotans choose flower varieties that do well in local conditions.

Producer harvesting dahlia flowers on a flower farm.

An Introduction to Cut Flower Production

In addition to their stunning colors and beauty, cut flowers can add supplemental income to gardens and farms alike. Learn some tips for growing, harvesting and marketing cut flowers this growing season!

Hostas growing under filtered light beneath a tree.

Hosta: A Shade-loving Perennial

Hostas, known for their foliage and love of shade, have developed into a coveted landscaping staple. Learn how to select, plant and grow a hosta that's right for your garden or landscape!

A medium orange and black butterfly resting with its wings open on small green leaves in a grassy area.

Generalist Host Plants in South Dakota

Many butterflies and moths are generalists, meaning that their larva can use a variety of host plants as food. Learn about some of the best host plants you can grow in your yard to support butterflies, moths, and everything that relies on them!

A large white flower with green leaves

Night-Blooming Flowers and Host Plants for Moths

Moths are fascinating creatures, and they are also important pollinators. Learn about a variety of night-blooming flowers and native host plants that can attract these beneficial insects to your yard and garden.

Rose rust disease symptoms on the tops and bottoms of leaves.

Rose Rust

Common rust of roses is a fungal disease that is found throughout the United States. While hot and dry summers limit the prevalence of the disease, it surfaces when weather conditions are cool and wet.

Full plant profiles: Golden alexander and wild parsnip.

Plant Look-Alikes: What’s the Difference Between Golden Alexander and Wild Parsnip?

Golden alexander (Zizia aurea) is a striking native plant in South Dakota. However, another plant in this region often mistaken for golden alexander does not belong here and contains a harmful toxin.

Woodland Phlox and Dame’s Rocket.

Plant Look-Alikes: What’s the Difference Between Phlox and Dame’s Rocket?

Distinguishing between native phlox flowers and the invasive dame's rocket can be challenging due to their similar appearances. Learn some key characteristics that can help you tell dame's rocket apart before it invades your property.

Left: Fireweed growing in a clearing. Right: Purple loosestrife growing in a meadow.

Plant Look-Alikes: What’s the Difference Between Fireweed and Purple Loosestrife?

Fireweed and purple loosestrife are often confused with one another due to their similar appearances, but the two plants have dramatically different impacts on the environment. Learn some key characteristics to help tell them apart.

Rose leaves with dark black to purplish spots throughout.

Black Spot Disease in Roses

Black spot is a recurring fungal disease in roses that will decrease the vigor and blooms of rose plants if it is not managed. Learn some expert tips for identifying and managing it in your gardens.