Firesticks
Euphorbia tirucalli 'Rosea'
A pencil-thin, branching succulent whose cylindrical stems turn brilliant orange, red, and yellow in cool, sunny weather. It is a dramatic landscape and container plant that demands caution because of its irritating sap.
- Light
- Full sun to bright light
- Water
- Very sparingly; drought tolerant
- Difficulty
- Easy
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Overview
Firesticks is a cultivar of Euphorbia tirucalli, a tropical African succulent that forms a dense thicket of slender, leafless, pencil-like stems. In bright sun and cool temperatures the stems blaze with fiery orange, red, and golden hues, fading to green in heat and shade.
Despite its cactus-like look it is not a cactus but a euphorbia. It carries a milky white latex sap that is caustic and can severely irritate skin and eyes, so handling requires gloves and care.
Fast-growing and extremely drought tolerant, it is popular in warm-climate gardens and as a striking potted accent.
How to identify it
- Stems: Thin, cylindrical, pencil-width branches that fork repeatedly; bright orange to red and yellow in cool sun, greenish in shade or heat
- Leaves: Tiny and short-lived, usually absent, so the plant appears all stems
- Sap: Copious milky white latex when broken - caustic and toxic
- Size: Can reach several feet tall as a shrub; stays smaller in pots
- Habit: Dense, upright, coral-like branching mass
Care & growing
Light: Full sun produces the brightest fiery color; bright indirect light indoors keeps it healthy but greener.
Water: Highly drought tolerant. Water only when fully dry; overwatering quickly causes rot.
Soil: Gritty, fast-draining cactus or succulent mix.
Temperature: Loves heat but colors up best with cool nights; protect from frost below about 30 F (-1 C).
Feeding: Minimal; a light succulent feed in spring is plenty.
Propagation: From stem cuttings - wear gloves, rinse off sap, and let cuttings callus for several days before planting.
Caution: Always wear gloves and eye protection; the sap is a serious irritant.
Habitat & origin
Euphorbia tirucalli is native to semi-arid regions of Africa, particularly eastern and southern Africa, and has naturalized in many tropical areas including India and Brazil.
The 'Rosea' / Firesticks cultivar is grown ornamentally in warm climates such as the southern US, Australia, and the Mediterranean, and as a houseplant elsewhere.
Uses & benefits
Firesticks is valued chiefly as a dramatic ornamental for xeriscapes, succulent gardens, and bold container displays.
The wild species has historically been used as living fencing and hedging in Africa, and its latex has been investigated as a potential biofuel feedstock. However, the sap is toxic and caustic, so the plant has no safe culinary or home-medicinal use.
Frequently asked questions
Is Firesticks a cactus?
No. It looks cactus-like but is a Euphorbia, a different family. Unlike cacti it bleeds caustic milky sap when cut.
Why is the sap dangerous?
The white latex contains irritant compounds that can cause painful skin rashes and serious eye injury. Always wear gloves and protect your eyes.
Why aren't my stems turning red?
The fiery color needs full sun plus cool temperatures. In heat or low light the stems stay green.
How much water does it need?
Very little. It is extremely drought tolerant; water only when the soil is bone dry.
Firesticks guides
In-depth guides for identifying, growing, and caring for Firesticks.
