North America Native Plant

Fivepetal Cliffbush

Botanical name: Jamesia americana var. macrocalyx

USDA symbol: JAAMM

Life cycle: perennial

Habit: shrub

Native status: Native to the lower 48 states  

Fivepetal Cliffbush: Utah’s Rare Mountain Beauty Worth Growing Responsibly If you’re looking for a truly special native plant that embodies the rugged beauty of Utah’s mountains, let me introduce you to the fivepetal cliffbush (Jamesia americana var. macrocalyx). This charming perennial shrub is like finding a hidden gem in the ...

Rare plant alert!

Region: Conservation status by state

Status: S5T2: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘ Secure: At very low or no risk of extinction in the jurisdiction due to a very extensive range, abundant populations or occurrences, with little to no concern from declines or threats. ⚘

Fivepetal Cliffbush: Utah’s Rare Mountain Beauty Worth Growing Responsibly

If you’re looking for a truly special native plant that embodies the rugged beauty of Utah’s mountains, let me introduce you to the fivepetal cliffbush (Jamesia americana var. macrocalyx). This charming perennial shrub is like finding a hidden gem in the world of native gardening – beautiful, tough as nails, and with a story that makes it even more precious.

What Makes Fivepetal Cliffbush Special

This delightful multi-stemmed woody shrub typically stays under 13-16 feet tall, making it perfect for residential landscapes. What really sets it apart are its clusters of small, fragrant white flowers that bloom in late spring to early summer. Each flower has 4-5 delicate petals (hence the name!), and when they’re in full bloom, they create quite the show while filling the air with their sweet fragrance.

A True Utah Native

Fivepetal cliffbush is native to the lower 48 states, but this particular variety calls Utah home exclusively. You’ll find it naturally growing in the Wasatch and Uinta Mountains, where it has adapted to thrive in rocky, challenging conditions.

Important Conservation Note

Here’s where things get interesting – and important. This beautiful shrub has a Global Conservation Status of S5T2, which means this variety is considered imperiled. While that might sound concerning, it actually makes growing it in your garden even more meaningful! You’ll be helping to preserve this special plant for future generations. Just make sure you source your plants responsibly from reputable native plant nurseries that propagate rather than collect from wild populations.

Perfect for Mountain and Xeric Gardens

Fivepetal cliffbush is absolutely perfect for:

  • Rock gardens where its natural mountain habitat is mimicked
  • Xeriscaping projects that celebrate drought-tolerant plants
  • Native plant gardens focused on Utah species
  • Mountain or alpine-style landscape designs
  • Naturalized areas where you want low-maintenance beauty

It works wonderfully as a specimen plant where its unique flowers can be appreciated up close, or plant several together for a more dramatic display.

Growing Conditions That Make It Happy

Think mountain tough and you’ve got the right idea. This shrub thrives in USDA hardiness zones 4-8 and loves:

  • Well-draining, rocky, or sandy soils (drainage is absolutely crucial!)
  • Full sun to partial shade locations
  • Minimal water once established – it’s incredibly drought tolerant
  • Poor to average soils (rich soils can actually cause problems)

Planting and Care Tips

The good news? Once you get fivepetal cliffbush established, it’s remarkably low-maintenance:

  • Plant in spring when the soil is workable
  • Focus on drainage above all else – amend heavy clay soils with sand and gravel
  • Water regularly the first year, then back off significantly
  • Skip the fertilizer – this mountain native prefers lean conditions
  • Pruning is rarely needed, but if desired, do it right after flowering

Pollinator Magnet

Those fragrant white flowers aren’t just pretty – they’re pollinator gold! Native bees, butterflies, and other beneficial insects absolutely love them. By planting fivepetal cliffbush, you’re creating a valuable pit stop in the pollinator highway.

The Bottom Line

Fivepetal cliffbush is perfect for gardeners who want something truly special – a rare Utah native that brings mountain beauty to your landscape while supporting local pollinators and conservation efforts. Its drought tolerance and low-maintenance nature make it ideal for sustainable gardening, and its conservation status gives your garden a meaningful purpose.

Just remember to source responsibly, be patient with establishment, and then sit back and enjoy this mountain treasure for years to come. Your garden – and Utah’s native plant heritage – will thank you for it!

Fivepetal Cliffbush

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

Rosales

Family

Hydrangeaceae Dumort. - Hydrangea family

Genus

Jamesia Torr. & A. Gray - cliffbush

Species

Jamesia americana Torr. & A. Gray - fivepetal cliffbush

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