North America Native Plant

Wishbone-bush

Botanical name: Mirabilis laevis var. retrorsa

USDA symbol: MILAR

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Synonyms: Mirabilis bigelovii A. Gray var. retrorsa (A. Heller) Munz (MIBIR)  âš˜  Mirabilis retrorsa A. Heller (MIRE3)   

Wishbone-Bush: A Lesser-Known Native Perennial for Western Gardens If you’re looking to add authentic native character to your western garden, wishbone-bush (Mirabilis laevis var. retrorsa) might just be the under-the-radar perennial you’ve been searching for. This native forb brings a touch of the wild Southwest right to your backyard, though ...

Wishbone-Bush: A Lesser-Known Native Perennial for Western Gardens

If you’re looking to add authentic native character to your western garden, wishbone-bush (Mirabilis laevis var. retrorsa) might just be the under-the-radar perennial you’ve been searching for. This native forb brings a touch of the wild Southwest right to your backyard, though it’s certainly not your typical garden center find!

What Makes Wishbone-Bush Special?

Wishbone-bush is a true native of the American West, naturally occurring across Arizona, California, Nevada, Oregon, and Utah. As a perennial forb, it’s built for the long haul—coming back year after year without the fuss of replanting. Unlike woody shrubs or trees, this herbaceous plant keeps its growing points at or below ground level, making it perfectly adapted to survive challenging western conditions.

You might also encounter this plant listed under its botanical synonyms Mirabilis bigelovii var. retrorsa or Mirabilis retrorsa in older references, but they’re all the same hardy western native.

Why Consider Wishbone-Bush for Your Garden?

Here’s where we’ll be honest with you—wishbone-bush is definitely a plant for the adventurous native gardener rather than someone seeking instant gratification or showstopping blooms. As a lesser-known variety within the four o’clock family (Mirabilis), it offers several compelling reasons to give it a try:

  • True native status supports local ecosystems
  • Perennial nature means long-term garden investment
  • Adapted to challenging western growing conditions
  • Low-maintenance once established
  • Adds authenticity to native plant gardens

Garden Design and Landscaping Uses

Wishbone-bush works best in naturalistic settings where it can blend with other native plants. Think native plant gardens, restoration projects, or areas where you want to recreate a bit of natural western habitat. It’s probably not the best choice for formal flower beds or high-visibility foundation plantings, but it could be perfect for:

  • Native plant demonstration gardens
  • Low-water xeriscaping projects
  • Wildlife habitat restoration areas
  • Educational or botanical garden settings

Growing Conditions and Care

While specific growing requirements for this particular variety are not extensively documented, we can make educated assumptions based on its native range and habitat. Wishbone-bush likely prefers:

  • Well-draining soils (essential for most desert and semi-arid natives)
  • Full sun to partial shade
  • Low to moderate water once established
  • Protection from excessive winter moisture

As with most western natives, the key to success is probably avoiding overwatering and ensuring good drainage, especially during winter months.

The Reality Check

Let’s be upfront—this isn’t a plant you’ll find detailed growing guides for, and it’s definitely not available at your local nursery. If you’re interested in growing wishbone-bush, you’ll likely need to source seeds from specialized native plant suppliers or botanical gardens. Consider it a plant for the true native plant enthusiast rather than the casual gardener.

For those new to native gardening in the Southwest, you might want to start with better-documented relatives in the Mirabilis family or other proven native perennials before tackling this particular variety.

Supporting Native Plant Communities

While we don’t have specific data on wildlife benefits for this variety, most native plants support local pollinator and wildlife populations in ways that non-natives simply can’t match. By choosing true natives like wishbone-bush, you’re contributing to the preservation of regional plant communities and supporting the creatures that have evolved alongside them.

Whether wishbone-bush is right for your garden depends on your goals, patience level, and commitment to growing truly local plants. It’s certainly not for everyone, but for the dedicated native plant gardener willing to experiment with lesser-known species, it could be a rewarding addition to a thoughtfully designed native landscape.

Wishbone-bush

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Caryophyllidae

Order

Caryophyllales

Family

Nyctaginaceae Juss. - Four o'clock family

Genus

Mirabilis L. - four o'clock

Species

Mirabilis laevis (Benth.) Curran - desert wishbone-bush

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