Spanish Bayonet, Harriman's Yucca

Yucca harrimaniae

Family: Agavaceae (ah-gav-AY-see-ee) (Info)
Genus: Yucca (YUK-uh) (Info)
Species: harrimaniae



Cactus and Succulents

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Drought-tolerant; suitable for xeriscaping

Where to Grow:

Suitable for growing in containers


6-12 in. (15-30 cm)


15-18 in. (38-45 cm)


USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

Sun Exposure:

Full Sun


Plant has spines or sharp edges; use extreme caution when handling

Bloom Color:

White/Near White


Bloom Time:

Unknown - Tell us



Provides winter interest

Other details:

Unknown - Tell us

Soil pH requirements:

Unknown - Tell us

Patent Information:

Unknown - Tell us

Propagation Methods:

Unknown - Tell us

Seed Collecting:

Allow pods to dry on plant; break open to collect seeds


This plant has been said to grow in the following regions:

Grand Junction, Colorado

Mount Sterling, Kentucky

High Rolls Mountain Park, New Mexico

Las Cruces, New Mexico

Glen Margaret, Nova Scotia

Vermilion, Ohio

Lindon, Utah

Santaquin, Utah

show all

Gardeners' Notes:


On Apr 30, 2011, DJClemons from Vermilion, OH wrote:

I just bought a house from an amazing gardener in her 80's. She planted 6 Yucca harrimaniae on the property as small plants. They are now HUGE- about 2 1/2 feet tall spikes and I'm told the flowers will stand taller. I dug one up to give to a friend to find it was 4 seperate plants with an extensive bulbous root system. I now nothing about these plants. I do know they thrive here in northern Ohio and that is amazing. All I read is that it is a midwestern plant. I have been told they are valuable, which is why I dug one up to give to a friend. I plan on putting several rock gardens in the yard, so I will transplant some to those. Question: How do I move these without damaging the bulbs? It seems, as big as these are, I couldnt dig far enough from the plant without cutting a bulb.... read more


On Jun 20, 2005, palmbob from Acton, CA (Zone 8b) wrote:

this is a common stemmless Yucca of the Rocky Mountain states that was, along with Yucca glauca, one of my least favorite plants in my youth- got stabbed by them all the time while hiking about the New Mexican mesas and canyons. Bayonet is a good description of this plant, and though I now find it somewhat ornamental, its pugnacity keeps me from giving it a 'thumbs up'.