Crown of Thorns has been in cultivation for centuries, and its long-lasting bracts — the small, colorful, papery structures that surround its true flowers — are the reason. In shades of red, pink, yellow, or white, they hold on for months at a time, giving this spiny, sculptural little shrub a near-constant flush of color.
Euphorbia milii is a tough, sun-loving succulent-adjacent shrub with thick, black spines running along its stems and small, oval leaves that come and go with the seasons. In its native Madagascar it can reach 5 or 6 feet; kept as a houseplant, it typically stays under 2 to 3 feet, which keeps it manageable on a bright windowsill.
This is a plant for someone who wants near-constant blooms without a demanding flowering plant's usual fuss.
Why You'll Love It
Crown of Thorns blooms far more consistently than most flowering houseplants, often holding color through multiple seasons with the right light.
Care at a Glance
Light: Bright light, including several hours of direct sun, for the best blooming
Water: Allow soil to dry out between waterings. Drought tolerant
Humidity: Tolerates low humidity. No misting needed
Temperature: Prefers 65 to 85 degrees F. Not frost-hardy
Growth: Slow to moderate. Stays compact as a houseplant
Skill level: Beginner-friendly. Handle with care around its spines
Pet safety: Toxic if ingested; sap can irritate skin. Keep away from pets and children
Good to Know
Fewer blooms almost always trace back to insufficient light — this plant wants as much direct sun as your space can offer to keep those bracts coming.
