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PlantFiles: Moon Cactus
Harrisia martinii

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Family: Cactaceae (kak-TAY-see-ee) (Info)
Genus: Harrisia (hair-RIS-ee-uh) (Info)
Species: martinii (mar-TIN-ee-eye) (Info)

Synonym:Cereus martinii
Synonym:Cereus perviridis
Synonym:Eriocereus martinii
Synonym:Eriocereus perviridis

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Category:
Cactus and Succulents

Height:
10-12 ft. (3-3.6 m)

Spacing:
3-6 in. (7-15 cm)
6-9 in. (15-22 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)
USDA Zone 11: above 4.5 C (40 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 Winter/Early Spring
Mid Spring
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall

Foliage:
Succulent

Other details:
May be a noxious weed or invasive

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
From softwood 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

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to view:

By Xenomorf
Thumbnail #1 of Harrisia martinii by Xenomorf

By Xenomorf
Thumbnail #2 of Harrisia martinii by Xenomorf

By Xenomorf
Thumbnail #3 of Harrisia martinii by Xenomorf

By Xenomorf
Thumbnail #4 of Harrisia martinii by Xenomorf

By Xenomorf
Thumbnail #5 of Harrisia martinii by Xenomorf

By Xenomorf
Thumbnail #6 of Harrisia martinii by Xenomorf

By Xenomorf
Thumbnail #7 of Harrisia martinii by Xenomorf

There are a total of 26 photos.
Click here to view them all!

Profile:

1 positive
1 neutral
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive 2ndChance On Aug 17, 2008, 2ndChance from Tempe, AZ (Zone 9b) wrote:

Also known as moonflower cactus and Eriocereus Martinii. Martinii has a true rope appearance unlike other Harissia cacti. Blooms at night. Faint scent to my nose. It grows like a weed for me. Not invasive, but it has a hardy nature. Mine is growing against a South facing block wall in full, blazing Phoenix sun in our natural, unamended caliche/clay soil. I never watered it after the first year. The blooms kind of sneak up on me. Usually after a good rain. Fruits readily.

Neutral Xenomorf On Jul 3, 2006, Xenomorf from Valley of the Sun, AZ (Zone 9b) wrote:

This does well on a trellis, and the flowers are fragrant, if you're up at dawn to catch them.

Regional...

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

Chandler Heights, Arizona
Phoenix, Arizona
Tempe, Arizona
Tucson, Arizona
San Bernardino, California



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