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Crown of Thorns

Euphorbia miliiAlso known as: Christ Plant, Christ Thorn
Crown of Thorns is a unique succulent shrub featuring thick, thorny stems and clusters of colorful bracts that surround tiny flowers. Native to Madagascar, it can grow up to 3 feet (90 cm) tall indoors. Despite its thorny nature, it's prized for its ability to bloom nearly year-round with minimal care.
Easy Care
bright-direct
Perennial

Quick Care Summary

Light
bright-direct
Temperature Range
55-90°F (13-32°C)
Ideal Temp
70°F (21°C)

Seasonal Care Schedule

Adjust your care routine based on the season for optimal plant health.

Watering Schedule

SeasonSchedule
SpringEvery 7-10 days, when soil is mostly dry
SummerEvery 5-7 days during active growth
FallEvery 10-14 days
WinterEvery 14-21 days, significantly reduce watering

Fertilizing Schedule

SeasonSchedule
SpringEvery 3-4 weeks with balanced or bloom-boosting fertilizer
SummerEvery 3-4 weeks
FallMonthly
WinterNo fertilizing needed

Pruning

Frequency: As needed for shape
Best Season: Spring
Wear thick gloves - thorns are sharp and sap is toxic. Prune to control size and encourage branching.

Repotting

Frequency: Every 2-3 years
Best Season: Spring
Use cactus/succulent soil. Handle carefully due to thorns. Terracotta pots help with drainage.

Flowering

Season
Year-round with proper care
Color
Red, pink, yellow, white, or salmon bracts
Colorful bracts surround tiny true flowers. Blooms best in bright light with consistent care.

Propagation Methods

  • Stem cuttings allowed to callous before planting
  • Let cut end dry for several days before rooting
  • Wear gloves when handling - sap is irritating

Common Problems

  • Leaf drop: Usually from overwatering or cold temperatures
  • No blooms: Insufficient light - needs bright direct sun
  • Leggy growth: Too little light
  • Yellowing: Overwatering or poor drainage

Pro Tips

  • Blooms best in direct sunlight - perfect for sunny windowsills
  • Sap is toxic and irritating - keep away from children and pets
  • Allow soil to dry between waterings for best flowering
  • Makes an excellent, long-lived houseplant with minimal care

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Crown of Thorns Care Guide - Watering, Light & Tips | AssistPlant