Field Notes

I’ve spent years exploring the the Mojave Desert around Las Vegas, trail running, rock climbing, off-road adventuring and hiking amongst the amazing flora and fauna of the region. The Spring Mountains, a sky island thousands of feet above the valley floor to the west of Las Vegas, has become my favorite place on earth and is the heartland of agave utahensis varieties nevadensis and eborispina. This landscape is also dotted with archeological sites like roasting pits, rock art and lithic tool making debris, much of which speak to the relationship between various indigenous groups and agave utahensis, which go back thousands of years. Here on this blog I write about my observations, learnings and research about this incredible land and the agave that call it home.

Daniel Zarrella Daniel Zarrella

10 Things You Didn’t Know About Agave Utahensis

There are so many interesting facts about agave utahensis. From it’s history, to it’s biology, to the research that will define it’s future. In this post, I’ll detail 10 facts you probably don’t know about agave utahensis.

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Daniel Zarrella Daniel Zarrella

Agave Utahensis and the Calcicole Problem

Agave utahensis is a calciphile plant. That means it prefers to grow on calcium-rich soils. The question of why certain plants exhibit calciphilic or calcifuge tendencies remains a subject of ongoing scientific investigation, likely involving multiple factors.

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Daniel Zarrella Daniel Zarrella

Ancient Agave Utahensis Roasting Pits

Archeological evidence shows that humans have lived in the Las Vegas area for at least 10,000 years and for much of that time, agave utahensis was an important food source. Evidence of ancient indigenous use of utahensis can be seen scattered throughout its range (especially in the Spring Mountains just outside of Las Vegas), in the form of roasting pits.

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Daniel Zarrella Daniel Zarrella

Why is Agave Utahensis v Nevadensis blue and Eborispina green?

Nevadensis is known to generally be more glaucous than the greener eborispina (and the rest of the species). One possible explanation for this is altitude. In my experience, Nevadensis is mostly found growing 1,000 to 2,000, or more feet higher than eborispina. I have recently heard reports of green plants above 7,000ft deep in eborispina’s range but have yet to personally confirm this.

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Daniel Zarrella Daniel Zarrella

History of Agave Utahensis

Humans have been using agave for more than 10,000 years, and cultivating it for thousands. In this article, I explain the history of the agave plant genus, the geological history that led to it’s spread, and how utahensis became it’s own species.

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Daniel Zarrella Daniel Zarrella

Potential Agave Utahensis Rock Art

Did I find pre-historic rock art depicting agave utahensis in the Spring Mountains? “BC” site is a protected archeological district nearly 3,000 acres big, in Red Rock Canyon at the feet of the Spring Mountains here in Las Vegas. It's a large complex of rock art, agave roasting pits, and water sources that has been used by Ancestral Puebloans, Southern Paiute, as well as historical groups.

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Daniel Zarrella Daniel Zarrella

Agave Utahensis Var Nevadensis vs Var Eborispina

There are four types of agave utahensis: ssp kaibabensis (which grows primarily in the area of the Grand Canyon), ssp utahensis (which grows in southern Utah, northern Arizona, southern California and southern Nevada), var eborispina, and var nevadensis. Eborispina and nevadensis only grow in Nevada and California, primarily in limestone soils around the Spring Mountains near Las Vegas.

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