North America Native Plant

Rocky Mountain Beeplant

Botanical name: Cleome serrulata

USDA symbol: CLSE

Life cycle: annual

Habit: forb

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

Synonyms: Cleome serrulata Pursh var. angusta (M.E. Jones) Tidestr. (CLSEA2)  âš˜  Peritoma serrulata (Pursh) DC. (PESE7)   

Rocky Mountain Beeplant: A Prairie Gem for Your Native Garden If you’re looking to add a splash of vibrant color to your native garden while supporting local pollinators, the Rocky Mountain beeplant (Cleome serrulata) might just be the perfect addition. This cheerful annual wildflower brings both beauty and ecological benefits ...

Rocky Mountain Beeplant: A Prairie Gem for Your Native Garden

If you’re looking to add a splash of vibrant color to your native garden while supporting local pollinators, the Rocky Mountain beeplant (Cleome serrulata) might just be the perfect addition. This cheerful annual wildflower brings both beauty and ecological benefits to landscapes across much of North America.

What Makes Rocky Mountain Beeplant Special?

Rocky Mountain beeplant is a true North American native, naturally occurring across an impressive range from Canada down through most of the United States. You’ll find this hardy annual growing wild from Alberta and British Columbia all the way down to Texas and California, making it well-adapted to a variety of climates and conditions.

This delightful forb (that’s botanist-speak for a non-woody flowering plant) typically reaches about 3 feet in height with an upright, erect growth habit. What really catches the eye are its conspicuous red flowers that bloom from late spring through summer, creating a striking display that’s sure to draw attention from both gardeners and pollinators alike.

Why Plant Rocky Mountain Beeplant?

There are several compelling reasons to consider adding this native beauty to your garden:

  • Pollinator Magnet: As the name suggests, this plant is beloved by bees and other pollinators
  • Low Maintenance: Once established, it requires minimal care and has a rapid growth rate
  • Drought Adaptable: While it prefers moderate moisture, it can handle some dry conditions
  • Native Heritage: Supporting local ecosystems by growing plants that naturally belong in your area
  • Easy to Grow: Perfect for beginning native plant gardeners

Where Does It Fit in Your Landscape?

Rocky Mountain beeplant shines in several garden settings:

  • Prairie Gardens: A natural choice for recreating grassland ecosystems
  • Wildflower Meadows: Adds vertical interest and bold color
  • Native Plant Gardens: Fits perfectly with other indigenous species
  • Naturalized Areas: Great for less formal, wild-looking spaces
  • Pollinator Gardens: Essential for attracting and feeding beneficial insects

Growing Conditions and Care

One of the best things about Rocky Mountain beeplant is how adaptable it is. Here’s what it prefers:

Soil: This plant isn’t too picky, but it performs best in coarse to medium-textured, well-draining soils. It can handle a pH range from 6.0 to 7.6, so most garden soils will work just fine.

Sun and Shade: While it can tolerate some shade, Rocky Mountain beeplant really thrives in full sun to partial shade conditions.

Water: Moderate moisture is ideal, though it has low drought tolerance once established. It’s classified as facultative upland, meaning it usually grows in non-wetland areas but can occasionally tolerate wetter conditions.

Climate: This hardy annual can grow in areas with minimum temperatures around 52°F and needs at least 70 frost-free days to complete its growing cycle.

Planting and Propagation

Growing Rocky Mountain beeplant from seed is straightforward and rewarding:

  • When to Plant: Direct sow seeds in spring after the last frost
  • Seeding Rate: Plan for about 4,800 to 11,000 plants per acre, depending on your desired density
  • Seed Facts: With about 64,000 seeds per pound, a little goes a long way
  • Germination: Seeds show high vigor and don’t require cold stratification
  • Growth: Expect rapid growth throughout spring and summer

The plant produces abundant seeds that persist well, so you may find volunteer seedlings appearing in subsequent years if conditions are right.

A Few Things to Keep in Mind

As an annual, Rocky Mountain beeplant completes its entire life cycle in one growing season. While this means you’ll need to replant each year (unless it self-seeds), it also means you can easily try it out without making a long-term commitment to your garden design.

The plant has a single crown growth form and doesn’t spread vegetatively, so it stays where you plant it. Its medium-textured, green foliage provides a nice backdrop for the showy red flowers, and while the foliage isn’t particularly notable in fall, the plant’s main show is during its active growing season anyway.

The Bottom Line

Rocky Mountain beeplant offers native plant gardeners an excellent opportunity to add color, support pollinators, and grow something that truly belongs in the North American landscape. Its ease of cultivation, rapid growth, and ecological benefits make it a wonderful choice for both novice and experienced gardeners looking to create more sustainable, wildlife-friendly spaces.

Whether you’re establishing a prairie garden, creating a pollinator haven, or simply want to try growing something new and native, Rocky Mountain beeplant deserves a spot on your seed list. Your local bees will certainly thank you for it!

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

FACU

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

Eastern Mountains and Piedmont

FACU

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

Great Plains

FACU

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

Midwest

FACU

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

Northcentral & Northeast

FACU

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

Western Mountains, Valleys, and Coast

FACU

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

Rocky Mountain Beeplant

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Dilleniidae

Order

Capparales

Family

Capparaceae Juss. - Caper family

Genus

Cleome L. - spiderflower

Species

Cleome serrulata Pursh - Rocky Mountain beeplant

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