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PlantFiles: Cycad
Dioon rzedowskii

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Family: Zamiaceae
Genus: Dioon (dy-OH-awn) (Info)
Species: rzedowskii (re-DOW-skee-eye) (Info)

Category:
Cycads

Height:
4-6 ft. (1.2-1.8 m)
6-8 ft. (1.8-2.4 m)
8-10 ft. (2.4-3 m)
10-12 ft. (3-3.6 m)
12-15 ft. (3.6-4.7 m)

Spacing:
36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)

Hardiness:
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:
Sun to Partial Shade
Light Shade

Danger:
Seed is poisonous if ingested
All parts of plant are poisonous if ingested
Plant has spines or sharp edges; use extreme caution when handling

Bloom Color:
Unknown - Tell us

Bloom Time:
Unknown - Tell us

Foliage:
Grown for foliage
Evergreen
Velvet/Fuzzy-Textured

Other details:
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
Unknown - Tell us

Patent Information:
Unknown - Tell us

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

Seed Collecting:
Unknown - Tell us

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to view:

By palmbob
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There are a total of 12 photos.
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Profile:

1 positive
No neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive palmbob On Feb 15, 2004, palmbob from Acton, CA (Zone 8b) wrote:

Another great tropical looking Dioon with wide leaflets. This one develops quite a bit of trunk (in many decades)- up to 15'. It has leaves that as a seedling, closely resemble Dioon spinulosum, but emerge with a pronounced tomentum on them. As the plant matures the leaflets become simple without any spines (except the sharp terminal one), similar to Dioon mejiae. This plant is from central Mexico. I have found it to be slow grower compared to D spinulosum but easy germinator and pretty hardy to cold. Doesn't seem to like our blazing So Cal sun though.

Regional...

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

Thousand Oaks, California
Anahola, Hawaii



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