North America Native Plant

Stinkweed

Botanical name: Cleomella

USDA symbol: CLEOM2

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Growing Stinkweed (Cleomella): A Surprisingly Charming Native Annual Don’t let the name fool you – despite being called stinkweed, Cleomella is actually a delightful native annual that deserves a second look from gardeners seeking authentic wildflower beauty. This humble forb may not win any fragrance awards, but it brings unique ...

Growing Stinkweed (Cleomella): A Surprisingly Charming Native Annual

Don’t let the name fool you – despite being called stinkweed, Cleomella is actually a delightful native annual that deserves a second look from gardeners seeking authentic wildflower beauty. This humble forb may not win any fragrance awards, but it brings unique charm and ecological value to the right garden setting.

What Makes Stinkweed Special?

Cleomella is a native annual forb – essentially a non-woody flowering plant that completes its entire life cycle in one growing season. As a true native to the lower 48 states, it has co-evolved with local ecosystems and supports regional wildlife in ways that non-native plants simply cannot match.

This hardy little plant grows across an impressive range of western states, including Arizona, California, Colorado, Idaho, Kansas, Nebraska, Nevada, New Mexico, Oklahoma, Oregon, Texas, and Utah. Its widespread distribution speaks to its adaptability and resilience – qualities that make it an excellent choice for low-maintenance native gardens.

Garden Appeal and Landscape Role

While Cleomella won’t steal the show with flashy blooms, it offers subtle beauty through delicate clusters of small yellow flowers that add texture and natural movement to garden spaces. The plant serves as an excellent supporting player in wildflower meadows, xeriscapes, and naturalized areas where its unassuming presence helps create authentic prairie and desert plant communities.

As an annual, stinkweed is perfect for gardeners who enjoy seasonal variety and don’t mind plants that come and go with the growing season. It works particularly well in:

  • Native wildflower gardens
  • Drought-tolerant landscapes
  • Naturalized meadow areas
  • Prairie restorations
  • Low-maintenance border plantings

Growing Conditions and Care

One of Cleomella’s greatest strengths is its low-maintenance nature. This resilient native thrives in full sun and well-draining soils – conditions that mirror its natural habitat across the American West. Once established, it demonstrates impressive drought tolerance, making it ideal for water-wise gardening.

The plant generally performs well in USDA hardiness zones 4-9, though specific tolerance may vary depending on your local climate and growing conditions. Its adaptability across such a wide geographic range suggests it can handle various soil types and weather patterns.

Planting and Establishment Tips

Growing stinkweed successfully is surprisingly straightforward:

  • Direct seed in fall or early spring when soil temperatures are cool
  • Scatter seeds on prepared soil surface – they need light to germinate
  • Provide minimal water until seedlings establish
  • Once established, reduce watering significantly
  • Allow plants to self-seed for natural populations

Remember, as an annual, Cleomella will complete its life cycle in one season, but allowing it to set seed means you’ll likely see new plants emerging the following year.

Wildlife and Pollinator Benefits

Beyond its garden appeal, stinkweed provides valuable ecosystem services. The small flowers attract native bees and other beneficial insects, contributing to local pollinator networks that support broader ecological health. As a native species, it also provides appropriate food sources for native insects that non-native plants often cannot support.

Is Stinkweed Right for Your Garden?

Consider adding Cleomella to your garden if you:

  • Want to support native ecosystems
  • Prefer low-maintenance, drought-tolerant plants
  • Enjoy naturalistic garden styles
  • Live in western or southwestern regions
  • Appreciate subtle, textural plant contributions

While stinkweed may not be the star of your garden, it’s exactly the kind of unsung hero that helps create authentic, sustainable, and ecologically valuable native plant communities. Sometimes the most valuable garden residents are the ones that work quietly behind the scenes – and Cleomella does exactly that with understated grace.

Stinkweed

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

Cleomella DC. - stinkweed

Species

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