Encephalartos Species, Bushman's River Cycad

Encephalartostrispinosus

Genus
Encephalartos (en-sef-uh-LAR-tos)
Species
trispinosus (try-spin-OH-sus)
Synonym
Encephalartos horridus var. trispinosus
Sun Exposure
Full Sun
Foliage
Grown for foliage
Evergreen
This plant is fire-retardant
This plant is resistant to deer
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)
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
Other Details
Category
Cycads
Water Requirements
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
Foliage Color
Bronze
Blue-Green
Where to Grow
Bloom Characteristics
Bloom Size
Other details
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
Regional

This plant is said to grow outdoors in the following regions:

Brentwood, California

Reseda, California

Spring Valley, California

Thousand Oaks, California

Tulare, California

Brandon, Florida

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Gardener's Notes:

1
positive
0
neutral
0
negative
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P
Acton, CA (Zone 8b) | November 2003 | positive

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. Ho...Read More

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