Giant Spanish Dagger
Yucca treculeana var. canaliculata

Family: Agavaceae (ah-gav-AY-see-ee) (Info)
Genus: Yucca (YUK-uh) (Info)
Species: treculeana var. canaliculata

Category:

Perennials

Shrubs

Trees

Tropicals and Tender Perennials

Cactus and Succulents

Height:

6-8 ft. (1.8-2.4 m)

8-10 ft. (2.4-3 m)

10-12 ft. (3-3.6 m)

Spacing:

10-12 ft. (3-3.6 m)

12-15 ft. (3.6-4.7 m)

15-20 ft. (4.7-6 m)

Hardiness:

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

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)

USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:

Full Sun

Danger:

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

Bloom Color:

White/Near White

Bloom Time:

Mid Spring

Late Spring/Early Summer

Mid Summer

Late Summer/Early Fall

Mid Fall

Foliage:

Grown for foliage

Evergreen

Blue-Green

Smooth-Textured

Succulent

Other details:

This plant is attractive to bees, butterflies and/or birds

Flowers are fragrant

Drought-tolerant; suitable for xeriscaping

This plant is fire-retardant

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

7.9 to 8.5 (alkaline)

8.6 to 9.0 (strongly alkaline)

Patent Information:

Non-patented

Propagation Methods:

By dividing the rootball

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

Seed Collecting:

Unknown - Tell us

Regional

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

,

Triel-sur-seine, Idaho

Edinburg, Texas (2 reports)

Elsa, Texas

La Joya, Texas

Mcallen, Texas

Mission, Texas

Salineno, Texas

San Perlita, Texas

Sullivan City, Texas

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Gardeners' Notes:

1
positive
0
neutrals
0
negatives
RatingContent
Positive

On Sep 14, 2009, BajaBlue from Rancho Santa Rita, TX (Zone 8a) wrote:

Yucca treculeana var. canaliculata is quite distinct from typical Y. treculeana in its huge proportions. This giant is made up of stiff 5'
long glaucous green leaves (3.5' is typical) radiating out from the massive 1' thick trunk.

In the garden, 7-year old clumps are 10' tall x 11' wide. Mature plants are topped with massive globes of white that open to
reveal the white bell-shaped flowers.

Deer HATE the spiny plants but bees butteflies moths and hummingbirds love the flowers as a food source.

This giant form hails from the Rio Grande Valley region of south Texas & Tamaulipas in northeastern Mexico, where it forms monster-sized clumps along the Texas-Mexico border.