Crown of Thorns, Christ Plant, Siamese Lucky Plant 'Duj doen'

Euphorbia milii

Family: Euphorbiaceae (yoo-for-bee-AY-see-ee) (Info)
Genus: Euphorbia (yoo-FOR-bee-uh) (Info)
Species: milii (MIL-ee-eye) (Info)
Cultivar: Duj doen


Cactus and Succulents

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Drought-tolerant; suitable for xeriscaping

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Suitable for growing in containers


6-12 in. (15-30 cm)

12-18 in. (30-45 cm)


6-9 in. (15-22 cm)

9-12 in. (22-30 cm)

12-15 in. (30-38 cm)


USDA Zone 9a: to -6.6 C (20 F)

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

Sun to Partial Shade


All parts of plant are poisonous if ingested

Bloom Color:

Pale Pink

Gold (Yellow-Orange)

Bright Yellow


Dark Blue




Bloom Time:

Mid Spring

Late Spring/Early Summer

Mid Summer


Grown for foliage


Other details:

Unknown - Tell us

Soil pH requirements:

4.5 or below (very acidic)

4.6 to 5.0 (highly acidic)

5.1 to 5.5 (strongly acidic)

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

7.9 to 8.5 (alkaline)

8.6 to 9.0 (strongly alkaline)

over 9.1 (very alkaline)

Patent Information:


Propagation Methods:

From softwood cuttings

By grafting

Seed Collecting:

Bag seedheads to capture ripening seed

Collect seedhead/pod when flowers fade; allow to dry

Allow pods to dry on plant; break open to collect seeds

Allow seedheads to dry on plants; remove and collect seeds

Remove fleshy coating on seeds before storing

Allow unblemished fruit to ripen; clean and dry seeds

Unblemished fruit must be significantly overripe before harvesting seed; clean and dry seeds

Ferment seeds before storing

Wear gloves to protect hands when handling seeds

Properly cleaned, seed can be successfully stored

Seed does not store well; sow as soon as possible

N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed


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


Gardeners' Notes:

No details have been posted.