Native Plants

Clokey’s Onion

Allium howellii var. clokeyi

USDA symbol: ALHOC

perennial forb

Lower 48 states: native

If you’re passionate about native California plants and drawn to unique wildflowers, you’ve probably stumbled across Clokey’s onion (Allium howellii var. clokeyi) in your research. This charming little perennial belongs to the vast Allium family—yes, the same group that gives us kitchen staples like garlic and onions—but this particular variety ...

Clokey’s Onion may be listed as rare in your area.
Global Conservation Status

Status: S4T2 | Apparently Secure: Uncommon but not rare, and usually widespread. Possible cause for longterm concern. Typically more than 100 occurrences in the state or more than 10,000 individuals.

Clokey’s Onion: A Rare California Native Worth Protecting

If you’re passionate about native California plants and drawn to unique wildflowers, you’ve probably stumbled across Clokey’s onion (Allium howellii var. clokeyi) in your research. This charming little perennial belongs to the vast Allium family—yes, the same group that gives us kitchen staples like garlic and onions—but this particular variety tells a much more exclusive story.

What Makes Clokey’s Onion Special?

Clokey’s onion is a California native that’s earned itself quite the reputation in conservation circles. With a Global Conservation Status of S4T2, this plant is considered rare and deserves our attention and respect. As a perennial forb, it returns year after year, forming part of California’s precious native plant heritage.

This herbaceous beauty lacks the woody stems of shrubs and trees, instead growing as a soft-tissued plant that dies back to ground level seasonally. Like other members of the onion family, it likely produces those characteristic globe-shaped flower clusters that make Alliums so beloved by gardeners and pollinators alike.

Where Does It Call Home?

Clokey’s onion is exclusively a California native, making it a true Golden State endemic. This limited geographical distribution contributes to its rarity status and makes it all the more precious for California gardeners looking to support their local ecosystem.

  • Species observed
  • No observations

Should You Plant Clokey’s Onion?

Here’s where things get important: while Clokey’s onion would make a wonderful addition to a native California garden, its rarity means you need to be extra careful about sourcing. If you’re determined to grow this special plant, you absolutely must obtain it from responsible, reputable native plant nurseries that propagate their own stock rather than wild-collecting.

Never, ever collect this plant from the wild. Its rare status means every plant in its natural habitat is crucial for the species’ survival.

Growing Clokey’s Onion: The Basics

While specific growing information for this variety is limited due to its rarity, we can draw from general Allium growing principles and California native plant wisdom:

  • Soil: Most California native onions prefer well-draining soil and can handle rocky or sandy conditions
  • Water: As a California native, it likely follows the Mediterranean pattern of winter moisture and summer drought tolerance
  • Sun: Probably enjoys full sun to partial shade, typical of many native wildflowers
  • Maintenance: Being a perennial forb, it should return each year with minimal fuss once established

Garden Design Ideas

If you’re fortunate enough to source Clokey’s onion responsibly, it would shine in:

  • Native California wildflower meadows
  • Rock gardens that mimic its natural habitat
  • Conservation gardens dedicated to rare species
  • Educational landscapes that tell the story of California’s botanical heritage

Supporting Conservation

Sometimes the best way to grow a rare plant is to support its conservation in the wild. Consider donating to California native plant conservation organizations, participating in habitat restoration projects, or simply spreading awareness about the importance of protecting rare species like Clokey’s onion.

If you’re looking for similar but more readily available native Alliums for your California garden, consider researching other California native onion species that aren’t as rare. Your local native plant society can point you toward beautiful alternatives that won’t strain wild populations.

The Bottom Line

Clokey’s onion represents something special in the plant world—a rare California endemic that connects us to the unique botanical heritage of the Golden State. While it might not be the right choice for every garden due to its rarity, understanding and appreciating plants like this one helps us become better stewards of our native flora.

Whether you end up growing Clokey’s onion or simply admiring it from afar, remember that every rare plant has a story to tell about the incredible diversity of life that calls California home.

Classification

Group: Monocot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Liliopsida - Monocotyledons
Subclass: Liliidae
Order: Liliales
Family: Liliaceae Juss. - Lily family
Genus: Allium L. - onion

Species: Allium howellii Eastw. - Howell's onion

Variety: Allium howellii Eastw. var. clokeyi Ownbey & Aase - Clokey's onion

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