Opuntia Species, Prickly Pear Cactus

Opuntiamegasperma

Family
Cactaceae (kak-TAY-see-ee)
Genus
Opuntia (op-UN-shee-a)
Species
megasperma (meg-uh-SPER-muh)
Synonym
Opuntia megasperma var. megasperma
Sun Exposure
Full Sun
Foliage
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)
15-20 ft. (4.7-6 m)
Spacing
6-8 ft. (1.8-2.4 m)
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)
Danger
Plant has spines or sharp edges; use extreme caution when handling
Bloom Color
Red
Bright Yellow
Bloom Time
Mid Spring
Late Spring/Early Summer
Other Details
Category
Trees
Cactus and Succulents
Water Requirements
Drought-tolerant; suitable for xeriscaping
Foliage Color
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
From woody stem cuttings
From softwood cuttings
From semi-hardwood cuttings
Allow cut surface to callous over before planting
From seed; direct sow after last frost
Seed Collecting
Allow unblemished fruit to ripen; clean and dry seeds
Unblemished fruit must be significantly overripe before harvesting seed; clean and dry seeds
Properly cleaned, seed can be successfully stored
Regional

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Gardener's Notes:

2
positives
1
neutral
0
negative
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X
Phoenix, AZ (Zone 9b) | December 2004 | positive

The main species and all 3 varieties are indigenous to the Galapagos Islands. They eventually form good sized trunks to over 3 feet thick...Read More

X
Phoenix, AZ (Zone 9b) | December 2004 | positive

The main species and all 3 varieties are indigenous to the Galapagos Islands. They eventually form good sized trunks to over 3 feet thick...Read More

P
Acton, CA (Zone 8b) | March 2004 | neutral

Another native Opuntia to the Galapagos Islands- develops into a small tree. No hardiness information, but does Ok in Santa Barbara, Cali...Read More

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