North America Non-native Plant

Crotalaria Capensis

Botanical name: Crotalaria capensis

USDA symbol: CRCA27

Native status: Not native but doesn't reproduce and persist in the wild

Crotalaria capensis: A Bright Yellow Beauty for Warm Climate Gardens If you’re looking for a cheerful, drought-tolerant plant that brings sunny yellow blooms to your garden, Crotalaria capensis might catch your eye. This South African native has found its way into warm-climate gardens across the United States, offering an easy-care ...

Crotalaria capensis: A Bright Yellow Beauty for Warm Climate Gardens

If you’re looking for a cheerful, drought-tolerant plant that brings sunny yellow blooms to your garden, Crotalaria capensis might catch your eye. This South African native has found its way into warm-climate gardens across the United States, offering an easy-care option for gardeners who want vibrant color without the fuss.

What is Crotalaria capensis?

Crotalaria capensis is a flowering plant native to South Africa’s Cape region. While it doesn’t have a widely recognized common name in the United States, this member of the legume family is known for its distinctive bright yellow, pea-like flowers and attractive silvery-green foliage. As a non-native species, it’s worth considering alongside native alternatives when planning your garden.

Geographic Distribution and Growing Range

Originally from South Africa, Crotalaria capensis has adapted well to similar Mediterranean climates. In the United States, it thrives in USDA hardiness zones 9-11, making it suitable for gardens in Florida, southern California, southern Texas, and other warm regions.

Why Consider Crotalaria capensis for Your Garden?

This plant offers several appealing characteristics for the right garden setting:

  • Drought tolerance: Once established, it requires minimal watering
  • Bright blooms: The cheerful yellow flowers add vibrant color to the landscape
  • Pollinator friendly: Bees and other pollinators are drawn to its nectar-rich flowers
  • Low maintenance: Easy to grow with minimal care requirements
  • Self-seeding: May naturalize in suitable conditions, providing ongoing blooms

Garden Design and Landscape Uses

Crotalaria capensis works well in several garden styles and situations:

  • Mediterranean gardens: Perfect for drought-tolerant, sun-loving plant combinations
  • Cottage gardens: Adds informal charm with its bright, cheerful blooms
  • Border plantings: Makes an excellent accent plant in mixed borders
  • Naturalized areas: Can fill in larger spaces where low-maintenance color is desired

Growing Conditions and Care

Growing Crotalaria capensis successfully is refreshingly straightforward:

  • Sunlight: Thrives in full sun locations
  • Soil: Prefers well-draining soil; tolerates poor soils once established
  • Water: Drought tolerant after establishment; avoid overwatering
  • Wetland status: As a facultative upland plant in arid regions, it typically grows in non-wetland areas but can tolerate some moisture

Planting and Propagation Tips

Getting started with Crotalaria capensis is easy:

  • From seed: Direct sow in spring after frost danger passes
  • Spacing: Allow adequate room for mature size
  • Initial care: Water regularly until established, then reduce frequency
  • Maintenance: Minimal pruning needed; deadhead spent blooms to encourage continued flowering

Consider Native Alternatives

While Crotalaria capensis can be a lovely addition to warm-climate gardens, consider these native alternatives that provide similar benefits while supporting local ecosystems:

  • Penstemon species: Native beardtongues offer colorful tubular flowers
  • Rudbeckia species: Black-eyed Susans provide bright yellow blooms
  • Ratibida species: Prairie coneflowers offer cheerful yellow flowers
  • Regional legumes: Local wild lupines or other native pea family members

The Bottom Line

Crotalaria capensis offers an easy-care option for gardeners in warm climates who want bright yellow blooms and drought tolerance. While it’s not native to North America, it can be a reasonable choice for Mediterranean-style gardens or naturalized areas where low-maintenance color is desired. However, always consider native alternatives first, as they provide better support for local wildlife and ecosystems. If you do choose to grow Crotalaria capensis, you’ll find it a rewarding, low-fuss addition that brings sunny cheer to your garden with minimal effort on your part.

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

Crotalaria Capensis

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Fabales

Family

Fabaceae Lindl. - Pea family

Genus

Crotalaria L. - rattlebox

Species

Crotalaria capensis Jacq.

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