North America Native Plant

Sunflower

Botanical name: Helianthus ×orgyaloides

USDA symbol: HEOR

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Helianthus ×orgyaloides: The Mysterious Colorado Sunflower If you’ve stumbled across the name Helianthus ×orgyaloides while researching native sunflowers, you’ve discovered one of the more enigmatic members of the sunflower family. This perennial sunflower is native to the United States, but don’t expect to find it at your local garden center ...

Helianthus ×orgyaloides: The Mysterious Colorado Sunflower

If you’ve stumbled across the name Helianthus ×orgyaloides while researching native sunflowers, you’ve discovered one of the more enigmatic members of the sunflower family. This perennial sunflower is native to the United States, but don’t expect to find it at your local garden center – this one’s a bit of a botanical mystery!

What Makes This Sunflower Special

Helianthus ×orgyaloides is what botanists call a hybrid, indicated by that little × symbol in its name. As a perennial forb, it lacks woody stems and instead produces herbaceous growth that dies back each winter, returning from underground roots the following spring. This puts it in the same category as many beloved garden perennials, though this particular sunflower is far less common than its cousins.

Where You’ll Find It (Or Won’t)

This native sunflower calls Colorado home, making it quite geographically limited compared to other sunflower species that spread across multiple states. Its restricted range is part of what makes it so intriguing – and so challenging to grow.

The Challenge for Gardeners

Here’s where things get tricky for native plant enthusiasts. While Helianthus ×orgyaloides is indeed a native species that would theoretically be wonderful for supporting local ecosystems, finding reliable information about its growing requirements – let alone finding the plant itself – is quite difficult. The limited documentation suggests this may be a rare natural hybrid or a designation that isn’t widely recognized in modern horticulture.

Better Alternatives for Your Garden

If you’re drawn to the idea of growing native sunflowers in your Colorado landscape, consider these well-documented alternatives:

  • Maximilian Sunflower (Helianthus maximiliani) – A tall, late-blooming perennial that’s fantastic for pollinators
  • Jerusalem Artichoke (Helianthus tuberosus) – Offers both ornamental value and edible tubers
  • Prairie Sunflower (Helianthus petiolaris) – A shorter annual native that self-seeds readily

The Bottom Line

While Helianthus ×orgyaloides represents an interesting piece of Colorado’s native plant heritage, the lack of available growing information and plant material makes it impractical for most home gardeners. Instead of chasing this botanical unicorn, focus your energy on the many other spectacular native sunflowers that are readily available and well-suited to cultivation.

Sometimes the most responsible approach to rare native plants is to admire them from afar and choose more common relatives that can provide similar ecological benefits without the guesswork. Your local pollinators will be just as happy with a thriving patch of Maximilian sunflowers as they would be with this elusive hybrid – and you’ll have a much better chance of growing success!

Sunflower

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

Asterales

Family

Asteraceae Bercht. & J. Presl - Aster family

Genus

Helianthus L. - sunflower

Species

Helianthus ×orgyaloides Cockerell (pro sp.) [maximiliani × salicifolius] - sunflower

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