North America Native Plant

Spanish Bayonet

Botanical name: Yucca harrimaniae var. sterilis

USDA symbol: YUHAS

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Spanish Bayonet: A Rare Native Treasure for Utah Gardens Meet Yucca harrimaniae var. sterilis, commonly known as Spanish bayonet – a fascinating native plant that’s as mysterious as it is beautiful. This perennial gem calls Utah home and represents one of nature’s more elusive botanical treasures. While you might think ...

Rare plant alert!

Region: Conservation status by state

Status: S4S5T1T2: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is critically Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (<1,000) ⚘ 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) ⚘ 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 ⚘ 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. ⚘

Spanish Bayonet: A Rare Native Treasure for Utah Gardens

Meet Yucca harrimaniae var. sterilis, commonly known as Spanish bayonet – a fascinating native plant that’s as mysterious as it is beautiful. This perennial gem calls Utah home and represents one of nature’s more elusive botanical treasures. While you might think Spanish bayonet sounds like something from a swashbuckling adventure, this plant is actually a peaceful addition to the right garden setting.

What Makes This Plant Special?

Spanish bayonet is classified as a forb herb, which simply means it’s a non-woody plant that dies back to ground level but returns year after year. Don’t let the technical classification fool you – this is a hardy perennial that knows how to survive in challenging conditions. What sets this variety apart is right there in its name: sterilis indicates this is a sterile variety, making it quite rare and unique in the plant world.

Where You’ll Find Spanish Bayonet

This native beauty has chosen Utah as its exclusive home territory within the lower 48 states. It’s what we call an endemic – a plant that has evolved to thrive in very specific conditions and doesn’t naturally occur anywhere else. This makes it extra special for Utah gardeners who want to celebrate their state’s unique botanical heritage.

A Word of Caution: Rarity Matters

Here’s where things get important: Spanish bayonet has a conservation status that indicates it’s quite rare. If you’re considering adding this plant to your garden, you’ll want to be extra responsible about sourcing. This means:

  • Only purchase from reputable native plant nurseries
  • Never collect from wild populations
  • Ensure any plants you buy are ethically propagated
  • Consider supporting conservation efforts for this species

Why Grow Spanish Bayonet?

Despite the limited information available about this specific variety’s growing habits, there are compelling reasons to consider Spanish bayonet for your Utah garden. As a native plant, it’s naturally adapted to local conditions and can provide authentic regional character to your landscape. Native plants also typically require less water and maintenance once established, making them environmentally friendly choices.

The fact that this is a perennial means you’ll get years of enjoyment from a single planting – though patience may be required as native plants often take time to establish themselves properly.

Growing Challenges and Considerations

Here’s where we need to be honest: specific growing information for Yucca harrimaniae var. sterilis is quite limited. This rarity in cultivation information reflects its status as an uncommon plant. If you’re determined to grow this species, your best bet is to:

  • Contact local native plant societies or botanical gardens
  • Consult with Utah’s native plant specialists
  • Research the general growing requirements of related yucca species
  • Start with just one plant to learn its needs

The Bottom Line

Spanish bayonet represents both an opportunity and a responsibility. For Utah gardeners passionate about native plants and conservation, this species offers a chance to grow something truly unique and regionally authentic. However, its rarity means this isn’t a plant for casual gardening – it’s for dedicated native plant enthusiasts who understand the importance of ethical sourcing and conservation.

If you’re new to native gardening or looking for easier options, consider starting with more common Utah natives to build your experience. But if you’re ready for a challenge and committed to responsible gardening practices, Spanish bayonet could be a remarkable addition to your collection – just make sure you’re doing your part to protect this rare treasure for future generations.

Spanish Bayonet

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Liliidae

Order

Liliales

Family

Agavaceae Dumort. - Century-plant family

Genus

Yucca L. - yucca

Species

Yucca harrimaniae Trel. - Spanish bayonet

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