North America Native Plant

Twolobe Larkspur

Botanical name: Delphinium nuttallianum

USDA symbol: DENU2

Life cycle: perennial

Habit: forb

Native status: Native to Canada âš˜ Native to the lower 48 states  

Synonyms: Delphinium nelsonii Greene (DENE3)  âš˜  Delphinium nelsonii Greene ssp. utahense (S. Watson) Ewan (DENEU)  âš˜  Delphinium nuttallianum Pritz. ex Walp. var. fulvum C.L. Hitchc. (DENUF)  âš˜  Delphinium nuttallianum Pritz. ex Walp. var. levicaule C.L. Hitchc. (DENUL2)  âš˜  Delphinium sonnei Greene (DESO)   

Twolobe Larkspur: A Charming Native Wildflower for Western Gardens If you’re looking to add a splash of blue to your native garden while supporting local wildlife, twolobe larkspur (Delphinium nuttallianum) might just be the perfect addition. This delicate perennial wildflower brings both beauty and ecological value to gardens across the ...

Twolobe Larkspur: A Charming Native Wildflower for Western Gardens

If you’re looking to add a splash of blue to your native garden while supporting local wildlife, twolobe larkspur (Delphinium nuttallianum) might just be the perfect addition. This delicate perennial wildflower brings both beauty and ecological value to gardens across the American West, proving that native plants can be just as stunning as any exotic import.

What Makes Twolobe Larkspur Special?

Twolobe larkspur is a true native gem, naturally occurring across western North America from British Columbia down to New Mexico. As a perennial forb—that’s botanist-speak for a non-woody herbaceous plant—it returns year after year to grace your garden with its presence. The plant gets its common name from its distinctive two-lobed leaves, though you might also see it referred to by various scientific synonyms in older gardening literature.

Where Does It Grow?

This hardy native has quite an impressive range, naturally growing in Alberta, British Columbia, Arizona, California, Colorado, Idaho, Montana, Nebraska, Nevada, New Mexico, Oregon, South Dakota, Utah, Washington, and Wyoming. Its wide distribution speaks to its adaptability and resilience—qualities that make it an excellent choice for gardeners dealing with challenging growing conditions.

Garden Appeal and Design Uses

Twolobe larkspur typically reaches 6 to 24 inches in height, making it perfect for:

  • Rock gardens and alpine plantings
  • Native wildflower meadows
  • Drought-tolerant landscape borders
  • Naturalized areas where you want a wild look

The plant produces delicate racemes of blue to purple flowers that add vertical interest and a pop of cool color to any planting scheme. Its finely divided foliage provides nice textural contrast to broader-leafed companion plants.

Wildlife and Pollinator Benefits

Here’s where twolobe larkspur really shines as a garden citizen. The nectar-rich flowers are magnets for:

  • Native bees seeking early season nectar
  • Butterflies looking for fuel during migration
  • Hummingbirds attracted to the tubular flower shape

By planting this native species, you’re essentially setting up a pollinator café that supports the local ecosystem.

Growing Conditions and Hardiness

One of the best things about twolobe larkspur is its adaptability. It thrives in USDA hardiness zones 3-8, making it suitable for a wide range of climates. The plant prefers:

  • Well-draining soils (it won’t tolerate soggy conditions)
  • Full sun to partial shade
  • Cooler temperatures, especially during hot summers
  • Minimal water once established

Its wetland status varies by region—it can handle both dry and moderately moist conditions, though it generally leans toward the drier side, especially in western areas.

Planting and Care Tips

Growing twolobe larkspur from seed is your best bet, and here’s the key: patience is required. The seeds need cold stratification to germinate properly, so fall planting works wonderfully. Simply scatter seeds where you want them to grow and let winter work its magic.

Once established, this is refreshingly low-maintenance plant. It’s naturally drought-tolerant and doesn’t need fertilizer—in fact, too-rich soil can make it grow too lush and potentially flop over. The main care requirement is ensuring good drainage to prevent root rot.

Is Twolobe Larkspur Right for Your Garden?

This native wildflower is an excellent choice if you’re creating a water-wise garden, want to support local pollinators, or simply love the charm of native wildflowers. It’s particularly well-suited for gardeners in western regions who want plants that can handle temperature extremes and limited water.

However, if you’re looking for a long-blooming showstopper or need a plant for consistently moist conditions, you might want to consider other options. Twolobe larkspur is more about subtle beauty and ecological function than dramatic garden impact.

For those embracing native gardening, twolobe larkspur represents exactly what makes indigenous plants so rewarding: they’re beautiful, beneficial to wildlife, and perfectly adapted to local conditions. Plus, there’s something deeply satisfying about growing plants that have been thriving in your region for thousands of years.

Wetland Status

The rule of seasoned gardeners and landscapers is to choose the "right plant for the right place" matching plants to their ideal growing conditions, so they'll thrive with less work and fewer inputs. But the simplicity of this catchphrase conceals how tricky plant selection is. While tags list watering requirements, there's more to the story.

Knowing a plant's wetland status can simplify the process by revealing the interaction between plants, water, and soil. Surprisingly, many popular landscape plants are wetland species! And what may be a wetland plant in one area, in another it might thrive in drier conditions. Also, it helps you make smarter gardening choices and grow healthy plants with less care and feeding, saving you time, frustration, and money while producing an attractive garden with greater ecological benefits.

Regions
Status
Moisture Conditions

Arid West

FAC

Facultative - Plants with this status can occur in wetlands and non-wetlands

Great Plains

FACU

Facultative Upland - Plants with this status usually occurs in non-wetlands but may occur in wetlands

Western Mountains, Valleys, and Coast

FAC

Facultative - Plants with this status can occur in wetlands and non-wetlands

Twolobe Larkspur

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Magnoliidae

Order

Ranunculales

Family

Ranunculaceae Juss. - Buttercup family

Genus

Delphinium L. - larkspur

Species

Delphinium nuttallianum Pritz. ex Walp. - twolobe larkspur

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA