North America Native Plant

Giant-trumpets

Botanical name: Macromeria viridiflora var. viridiflora

USDA symbol: MAVIV

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Giant-Trumpets: A Rare Native Gem from the American Southwest If you’re a native plant enthusiast with a passion for rare species, you might have stumbled across giant-trumpets (Macromeria viridiflora var. viridiflora) in your botanical wanderings. This intriguing perennial forb represents one of nature’s more elusive treasures, calling the arid landscapes ...

Rare plant alert!

Region: Conservation status by state

Status: S4?T3?: Status is uncertain but is somewhere between the following rankings: Inexact rank: ⚘ Subspecies or variety is vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals. ⚘ Apparently Secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the state or more than 10,000 individuals ⚘

Giant-Trumpets: A Rare Native Gem from the American Southwest

If you’re a native plant enthusiast with a passion for rare species, you might have stumbled across giant-trumpets (Macromeria viridiflora var. viridiflora) in your botanical wanderings. This intriguing perennial forb represents one of nature’s more elusive treasures, calling the arid landscapes of the American Southwest home.

Where Giant-Trumpets Call Home

Giant-trumpets is native to just two states: Arizona and New Mexico. This limited geographic distribution makes it a true regional specialty, perfectly adapted to the unique conditions of the Sonoran and Chihuahuan desert regions.

A Rare Beauty Worth Protecting

Here’s where things get interesting (and a bit concerning): giant-trumpets carries a Global Conservation Status of S4?T3?, which essentially means its conservation status is somewhat undefined or uncertain. This rarity designation is something every gardener should take seriously.

What does this mean for you as a gardener? If you’re considering adding this plant to your landscape, proceed with extreme caution and responsibility. Only source plants from reputable native plant nurseries that can guarantee ethical propagation methods. Never collect plants from the wild – this could further threaten already vulnerable populations.

Getting to Know This Desert Dweller

As a perennial forb, giant-trumpets lacks woody stems and instead produces herbaceous growth that dies back seasonally while maintaining a perennial root system. This growth pattern is typical of many desert plants that conserve energy during harsh conditions.

The name giant-trumpets hints at what might be spectacular trumpet-shaped flowers, though specific details about the plant’s appearance and blooming characteristics are limited in horticultural literature.

The Growing Challenge

Here’s where we hit a roadblock: detailed cultivation information for giant-trumpets is remarkably scarce. This lack of horticultural guidance suggests a few possibilities:

  • The plant may be extremely difficult to cultivate outside its natural habitat
  • It requires very specific growing conditions that are hard to replicate
  • Limited cultivation attempts have been made due to its rarity

Should You Grow Giant-Trumpets?

Given the current state of knowledge about this plant, most home gardeners should probably admire giant-trumpets from afar. The combination of rarity status and limited cultivation information makes this a plant best left to specialized botanical gardens, research institutions, or extremely experienced native plant enthusiasts.

If you’re drawn to rare southwestern natives, consider these more readily available alternatives:

  • Desert willow (Chilopsis linearis)
  • Penstemon species native to your region
  • Desert marigold (Baileya multiradiata)
  • Ghost plant (Graptopetalum paraguayense)

Supporting Conservation

The best way to help giant-trumpets? Support organizations working to protect southwestern desert habitats. Sometimes the most loving thing we can do for a rare plant is to ensure its natural home remains intact and undisturbed.

If you do encounter giant-trumpets in the wild during your desert adventures, take only photographs and leave only footprints. These rare beauties need all the help they can get to thrive in their natural environment.

Remember, every native plant plays a crucial role in its ecosystem, and rare species like giant-trumpets are irreplaceable pieces of our natural heritage. By choosing more common native alternatives for our gardens, we can still support local ecology while ensuring rare species get the protection they deserve.

Giant-trumpets

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Lamiales

Family

Boraginaceae Juss. - Borage family

Genus

Macromeria D. Don - giant-trumpets

Species

Macromeria viridiflora DC. - giant-trumpets

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