Yucca Species, Blue Yucca, Palmilla, Silver Leaf Yucca

Yucca luminosa

Family: Asparagaceae
Genus: Yucca (YUK-uh) (Info)
Species: luminosa (loo-min-OH-suh) (Info)
Synonym:Yucca rigida var. inermis
Synonym:Yucca rupicola var. rigida


Cactus and Succulents

Water Requirements:

Drought-tolerant; suitable for xeriscaping

Average Water Needs; Water regularly; do not overwater

Sun Exposure:

Full Sun

Sun to Partial Shade

Light Shade


Grown for foliage


Foliage Color:



12-15 ft. (3.6-4.7 m)

15-20 ft. (4.7-6 m)


36-48 in. (90-120 cm)

4-6 ft. (1.2-1.8 m)


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

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

USDA Zone 10a: to -1.1 C (30 F)

USDA Zone 10b: to 1.7 C (35 F)

Where to Grow:

Unknown - Tell us


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

Bloom Color:


Bloom Characteristics:

Unknown - Tell us

Bloom Size:

Unknown - Tell us

Bloom Time:

Mid Spring

Other details:

Unknown - Tell us

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:


Propagation Methods:

By dividing rhizomes, tubers, corms or bulbs (including offsets)

From softwood cuttings

From semi-hardwood cuttings

From seed; germinate in vitro in gelatin, agar or other medium

Seed Collecting:

Unknown - Tell us


This plant is said to grow outdoors in the following regions:

Chandler, Arizona

Green Valley, Arizona

Phoenix, Arizona

Tucson, Arizona

Hesperia, California

Los Angeles, California

Mission Viejo, California

San Marino, California

Spring Valley, California

Miami, Florida(2 reports)

Slidell, Louisiana

Las Vegas, Nevada

Albuquerque, New Mexico

Roswell, New Mexico

Grenoble, Rhône-Alpes

Austin, Texas

South Jordan, Utah

show all

Gardeners' Notes:


On Sep 16, 2016, Cactusdude from Miami, FL (Zone 10b) wrote:

Does fine and grows well in ground in South Florida in sun with good drainage. A beautiful species, distinctly silvery/sky blue.


On Jun 9, 2013, Max64 from Las Vegas, NV (Zone 9a) wrote:

I have one in my yard that thrives extremely well in the Vegas heat and sun. It is a slow grower but I enjoy it every day. It gets full sun up until 3 - 4 pm. It's planted on the South West side of my backyard. I also have a Joshua Tree and 2 Thompsoniana which all thrive well but the Rigida is just strikingly beautiful. Once we get into the 100F+ dry summer heat (June, July, August and early September) I water it at least once a week with several gallons of water. It loves it!. The drainage is very good and I always use the humidity probe to make sure the soil is completely dry before watering. I also check a few days before watering if or when we might get some rain, which is not very often. This applies to all my cactus and other plants. The humidity probe has been one of the cheapest b... read more


On Mar 23, 2009, Minime8484 from Chandler, AZ (Zone 9b) wrote:

We planted ours as a small (10" diameter) plant in 2004 in our front yard. It is now about 3 1/2 ' in diameter with 3 separate "bunches"; still hasn't gotten a trunk at all. However, much to my surprise, I noticed a bloom stalk is starting to come in from one of the bunches! I thought it would be YEARS until it bloomed for me, as I assumed they didn't bloom until they were well off the ground and were mature enough to have the 'tree' form. What a great surprise!


On Sep 25, 2008, kdaustin from Austin, TX (Zone 8b) wrote:

Probably one of the, if not the, most attractive yuccas.
I never get tired of looking at mine, foliage strongly silver blue, with a bold attractive silohette. I grow mine on a slightly raised area to help with drainage in extended rainy periods, as it is sensitive to too much moisture.


On Nov 18, 2004, Xenomorf from Phoenix, AZ (Zone 9b) wrote:

Yes, I do like the blue tint also. I'll be looking for one for the landscape, no doubt.


On Jan 16, 2004, palmbob from Acton, CA (Zone 8b) wrote:

Very striking blue-white leaved yucca with minimal branching. Looks a bit like Yucca rostrata, but no variegation of the leaves (though they do have a yellowish edge to the blades), and the leaves a stiffer and more dangerous. Slower growing than a Yucca rostrata, too. From N Mexico

I have found this to be a somewhat difficult plant to acquire and moderately pricey, but a beauty worth the search- very hardy and nearly always excellent looking in cultivation.