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PlantFiles: Madagascar Sago
Cycas thouarsii

 
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Family: Cycadaceae
Genus: Cycas (SY-kas) (Info)
Species: thouarsii (tho-AR-see-eye) (Info)

Synonym:Cycas glauca
Synonym:Cycas comorensis
Synonym:Cycas madagascariensis
Synonym:Cycas circinalis subsp. madagascariensis

2 members have or want this plant for trade.

Category:
Cycads

Height:
8-10 ft. (2.4-3 m)
10-12 ft. (3-3.6 m)
20-30 ft. (6-9 m)
30-40 ft. (9-12 m)

Spacing:
8-10 ft. (2.4-3 m)
10-12 ft. (3-3.6 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:
Parts of plant are poisonous if ingested

Bloom Color:
Inconspicuous/none

Bloom Time:
N/A

Foliage:
Grown for foliage
Evergreen
Blue-Green

Other details:
Average Water Needs; Water regularly; do not overwater
This plant may be considered a protected species; check before digging or gathering seeds

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
Thumbnail #1 of Cycas thouarsii by palmbob

By GreenEyedGuru
Thumbnail #2 of Cycas thouarsii by GreenEyedGuru

By palmbob
Thumbnail #3 of Cycas thouarsii by palmbob

By palmbob
Thumbnail #4 of Cycas thouarsii by palmbob

By cactus_lover
Thumbnail #5 of Cycas thouarsii by cactus_lover

By palmbob
Thumbnail #6 of Cycas thouarsii by palmbob

Profile:

1 positive
1 neutral
No negatives

Gardeners' Notes:

RatingAuthorComment
Neutral Cretaceous On Jun 20, 2007, Cretaceous from El Cerrito, CA (Zone 9b) wrote:

Cycas thouarsii is native to Kenya, Tanzania, Mozambique, the Comoro Islands, and Madagascar. Introduced into the Seychelles and Mauritius.

It grows in open woodland and on the edges of forests in sandy soil where annual rainfall is between 79-120 inches.

Cycadaceae are listed on CITES Appendix II.

Positive palmbob On Jun 15, 2004, palmbob from Tarzana, CA (Zone 9b) wrote:

Common fast growing cycad that looks a lot like Cycas circinalis, only it has blue-green leaves (the new ones). Gets to be a huge plant eventually and is good grower for me- one of the fastest species. A bit tender- frosts will damage the leaves , but rarely hurt the plant if mild and short. Mine in zone 9b has gotten some leaf burn, but that's it. Best out of full sun in so Cal- OK in tropics, though. From all over Africa and Madagascar.

Regional...

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

Reseda, California
Santa Ana, California
Spring Valley, California
Thousand Oaks, California
Vista, California



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