Euphorbia Species, Crown of Thorns

Euphorbiamilii var. splendens

Family
Euphorbiaceae (yoo-for-bee-AY-see-ee)
Genus
Euphorbia (yoo-FOR-bee-uh)
Synonym
Euphorbia melanacantha
Euphorbia platyacantha
Euphorbia splendens
Lacanthis splendens
Tithymalus splendens
Sun Exposure
Full Sun
Sun to Partial Shade
Light Shade
Foliage
Deciduous
Smooth
Textured
Height
18-24 in. (45-60 cm)
24-36 in. (60-90 cm)
36-48 in. (90-120 cm)
Spacing
24-36 in. (60-90 cm)
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)
Danger
Parts of plant are poisonous if ingested
All parts of plant are poisonous if ingested
Handling plant may cause skin irritation or allergic reaction
Plant has spines or sharp edges; use extreme caution when handling
Bloom Color
Red
Bloom Time
Mid Spring
Late Spring/Early Summer
Other Details
Category
Shrubs
Tropicals and Tender Perennials
Cactus and Succulents
Water Requirements
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
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
Allow cut surface to callous over before planting
Seed Collecting
Collect seedhead/pod when flowers fade; allow to dry
Allow seedheads to dry on plants; remove and collect seeds
Regional

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

Phoenix, Arizona

San Diego, California

Santa Barbara, California

Orlando, Florida

Rockland, Maine

Jacksonville, Texas

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Gardener's Notes:

1
positive
0
neutral
0
negative
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Port Charlotte, FL (Zone 10a) | May 2009 | positive

This is the largest of the Crown of Thorn plants with 1" orchid red blooms and large stiff canes that create a somewhat more upright matu...Read More

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