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PlantFiles: Bushman's River Cycad
Encephalartos trispinosus

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Family: Zamiaceae
Genus: Encephalartos (en-sef-uh-LAR-tos) (Info)
Species: trispinosus (try-spin-OH-sus) (Info)

One member has or wants this plant for trade.

Category:
Cycads

Height:
24-36 in. (60-90 cm)
36-48 in. (90-120 cm)

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:
Full Sun

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:
Inconspicuous/none

Bloom Time:
N/A

Foliage:
Grown for foliage
Evergreen
Silver/Gray
Blue-Green

Other details:
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
This plant is fire-retardant
This plant is resistant to deer

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:
By dividing rhizomes, tubers, corms or bulbs (including offsets)
From seed; germinate in vitro in gelatin, agar or other medium

Seed Collecting:
Unknown - Tell us

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There are a total of 30 photos.
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Profile:

1 positive
No neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive palmbob On Nov 10, 2003, palmbob from Acton, CA (Zone 8b) wrote:

This cycad is often confused with E. horridus, but its leaves are not twisted and it doesn't tend to be quite as blue colored. However, it is still a magnificent plant and should be included on anyone's list if they are collecting rare and great looking landscape plants in Southern California. This species resents warm, humid conditions, though and doesn't thrive in Florida or Hawaii- it will survive, but rarely cone. Like E. horridus, this plant is nasty spiny.

This is a somewhat variable plant with some having quite pale blue leaves and others are a flat green without any trace of blue. Also leaf morphology commonly is not trispinose, with many plants having two spines or only one. It is common to see large plants with all simple, unsplit leaflets, or some with these simple leaflets interspersed with loped or trispinose leaflets.

Regional...

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

Reseda, California
Spring Valley, California
Thousand Oaks, California
Tulare, California
Brandon, Florida



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