Photo by Melody

PlantFiles: Arizona Queen of the Night, Deer Horn Cactus, Reina de la Noche, Night Blooming Cereus
Peniocereus greggii var. transmontanus

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Family: Cactaceae (kak-TAY-see-ee) (Info)
Genus: Peniocereus (pen-ee-oh-KER-ee-us) (Info)
Species: greggii var. transmontanus

Synonym:Cereus greggii var. transmontanus
Synonym:Peniocereus greggii var. transmontanum

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Category:
Cactus and Succulents

Height:
12-18 in. (30-45 cm)
18-24 in. (45-60 cm)
24-36 in. (60-90 cm)
36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)
6-8 ft. (1.8-2.4 m)
8-10 ft. (2.4-3 m)

Spacing:
6-9 in. (15-22 cm)
9-12 in. (22-30 cm)
12-15 in. (30-38 cm)
15-18 in. (38-45 cm)

Hardiness:
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)

Sun Exposure:
Full Sun
Sun to Partial Shade
Light Shade

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

Bloom Color:
White/Near White

Bloom Time:
Late Spring/Early Summer
Mid Summer

Foliage:
Succulent

Other details:
Flowers are fragrant
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater

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:
Non-patented

Propagation Methods:
From woody stem cuttings
Allow cut surface to callous over before planting
From seed; direct sow after last frost

Seed Collecting:
Allow unblemished fruit to ripen; clean and dry seeds
Unblemished fruit must be significantly overripe before harvesting seed; clean and dry seeds
Properly cleaned, seed can be successfully stored

Click thumbnail
to view:

By Xenomorf
Thumbnail #1 of Peniocereus greggii var. transmontanus by Xenomorf

By Xenomorf
Thumbnail #2 of Peniocereus greggii var. transmontanus by Xenomorf

By Xenomorf
Thumbnail #3 of Peniocereus greggii var. transmontanus by Xenomorf

By CactusJordi
Thumbnail #4 of Peniocereus greggii var. transmontanus by CactusJordi

By CactusJordi
Thumbnail #5 of Peniocereus greggii var. transmontanus by CactusJordi

By CactusJordi
Thumbnail #6 of Peniocereus greggii var. transmontanus by CactusJordi

By CactusJordi
Thumbnail #7 of Peniocereus greggii var. transmontanus by CactusJordi

There are a total of 12 photos.
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Profile:

1 positive
No neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive Xenomorf On Oct 6, 2004, Xenomorf from Valley of the Sun, AZ (Zone 9b) wrote:

This variety has flowers that are 3 inches across and is found in the Sonoran desert below 3300 ft.
Also can be grown from seed. I've seen these growing wild in Oro Valley, AZ & on the 'El Camino Del Diablo Trail' (Devils' Highway) that runs between Ajo and Wellton, Arizona in the Cabeza Prieta National Wildlife Refuge.

Regional...

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

Ajo, Arizona
Green Valley, Arizona
Maricopa, Arizona
Phoenix, Arizona
Tucson, Arizona (2 reports)
Wellton, Arizona
Bostonia, California
Buckingham, Pennsylvania
Terlingua, Texas



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