Photo by Melody

PlantFiles: Alluaudia
Alluaudia ascendens

Family: Didiereaceae
Genus: Alluaudia (al-loo-WAH-dee-uh) (Info)
Species: ascendens (as-SEN-dens) (Info)

Synonym:Didierea ascendens

Cactus and Succulents

15-20 ft. (4.7-6 m)
20-30 ft. (6-9 m)
30-40 ft. (9-12 m)

6-8 ft. (1.8-2.4 m)
8-10 ft. (2.4-3 m)
10-12 ft. (3-3.6 m)

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

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

Bloom Color:
Unknown - Tell us

Bloom Time:
Unknown - Tell us


Other details:
Drought-tolerant; suitable for xeriscaping

Soil pH requirements:
Unknown - Tell us

Patent Information:

Propagation Methods:
From woody stem cuttings
From seed; direct sow after last frost

Seed Collecting:
Unknown - Tell us

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1 positive
1 neutral
1 negative

Gardeners' Notes:

Negative CactusJordi On Dec 22, 2009, CactusJordi from El Cajon, CA wrote:

In the garden in SoCal I lost my 3 plants up to 12 ft tall in January '07 after 4 nights in a row at 24F.

Positive Zaragoza On Nov 5, 2009, Zaragoza from Zaragoza
Spain (Zone 8b) wrote:

This plant is fantastic as all Didiereaceae. I have one from 4 years ago. Very difficult to keep in my climate, it looses all leaves in winter and don't grow again until late summer. Last winter I almost lost my plant. Several frost killed the basis. But this summer I cutted it and replanted and it rooted very easily starting again to show leaves.

Neutral palmbob On May 8, 2007, palmbob from Acton, CA (Zone 8b) wrote:

Rare in cultivation- a Madagascan succulent growing very upright to 35'. Looks pretty darn similar to Alluaudia montagnacii… not sure what the difference is exactly… the leaves have a more pronounced heart shape to them, but that is pretty subtle difference… the spination is very similar… perhaps flowers are different.


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

Santa Barbara, California

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