North America Non-native Plant

Shortflower Rattlebox

Botanical name: Crotalaria breviflora

USDA symbol: CRBR16

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

Shortflower Rattlebox: A Cheerful Native Wildflower for Southern Gardens If you’re looking to add a splash of sunshine to your native plant garden, meet the shortflower rattlebox (Crotalaria breviflora). This delightful little wildflower might not win any beauty contests against showier garden favorites, but it brings its own special charm ...

Shortflower Rattlebox: A Cheerful Native Wildflower for Southern Gardens

If you’re looking to add a splash of sunshine to your native plant garden, meet the shortflower rattlebox (Crotalaria breviflora). This delightful little wildflower might not win any beauty contests against showier garden favorites, but it brings its own special charm to naturalized landscapes across the Southeast.

What Is Shortflower Rattlebox?

Shortflower rattlebox is a native annual wildflower that belongs to the legume family. True to its name, this plant produces bright yellow, pea-like flowers that are smaller and more compact than those of its rattlebox cousins. The rattlebox part of the name comes from the seed pods that develop after flowering – when mature and dry, they actually rattle when shaken!

Where Does It Grow Naturally?

This sunny little wildflower calls the southeastern United States home, with its strongest presence in Florida and extending into neighboring states. You’ll typically find it growing in sandy areas, open woodlands, and disturbed sites where it can soak up plenty of sunshine.

Why Consider Growing Shortflower Rattlebox?

While it might not be the flashiest plant in your garden, shortflower rattlebox offers several compelling reasons to give it a try:

  • It’s truly native, supporting local ecosystems
  • Bright yellow flowers attract bees and other beneficial pollinators
  • Extremely low maintenance once established
  • Thrives in challenging sandy soils where other plants struggle
  • Self-seeds readily for natural garden expansion
  • Adds authentic wildflower character to native plant gardens

Perfect Garden Settings

Shortflower rattlebox shines brightest in:

  • Native wildflower meadows
  • Natural area restoration projects
  • Cottage-style native gardens
  • Wildlife habitat gardens
  • Sandy or challenging soil areas

Growing Conditions and Care

One of the best things about shortflower rattlebox is how easygoing it is. Here’s what it needs to thrive:

Sunlight: Full sun is essential – this plant loves to bask in bright light all day long.

Soil: Sandy, well-draining soil is ideal. It actually prefers lean soils and doesn’t need rich, fertile conditions.

Water: Once established, it’s quite drought tolerant. Avoid overwatering, which can lead to problems.

Climate: Best suited for USDA hardiness zones 8-10, where it can complete its growing cycle.

Planting and Care Tips

Getting started with shortflower rattlebox couldn’t be simpler:

  • Start from seed in spring after the last frost
  • Scatter seeds directly in the garden – no need for indoor starting
  • Barely cover seeds with soil, as they need light to germinate
  • Water gently until seedlings establish
  • Step back and let nature take its course!

The beauty of this plant is that it requires virtually no ongoing care. It will self-seed and create naturalized colonies over time, perfect for that wild garden look.

Supporting Pollinators and Wildlife

Like many members of the legume family, shortflower rattlebox is a pollinator magnet. Bees particularly enjoy the bright yellow flowers, and the plant blooms over an extended period, providing reliable nectar sources. As a native species, it also supports the complex web of insects and wildlife that have evolved alongside it.

The Bottom Line

Shortflower rattlebox might not be the star of your garden, but it’s definitely a valuable supporting player. If you’re creating a native plant garden, working on habitat restoration, or simply want a low-maintenance wildflower that supports local pollinators, this cheerful little plant deserves consideration. Just remember – it’s all about embracing the natural, slightly wild aesthetic rather than formal garden perfection!

Shortflower Rattlebox

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 breviflora DC. - shortflower rattlebox

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