Plants That Look Like Pencil Cactus

Several succulents, including Euphorbia tirucalli look-alikes like firestick and some stapeliads, mimic the pencil cactus’s thin, upright stems without the toxic sap. If you love the architectural look of the pencil cactus but worry about its milky, skin-irritating latex, you have plenty of safer options. This guide covers the best plants that look like pencil cactus, plus how to tell them apart at a glance.

The pencil cactus (Euphorbia tirucalli) is famous for its slender, green, finger-like branches that grow straight up. It is a striking plant, but it is also one of the most toxic houseplants you can own. The sap can cause severe burns, temporary blindness, and intense pain. So, finding a visual twin without the danger is a smart move.

Below, you will find the closest look-alikes, their care needs, and the key differences. We will also cover how to handle these plants safely, because some look-alikes are still toxic even if they are not the real pencil cactus.

This section covers the top visual duplicates. Each one shares the pencil-thin, leafless stem look. But they differ in growth habit, hardiness, and toxicity. Read carefully to choose the right one for your home or garden.

Firestick Or Pencil Plant

The firestick (Euphorbia tirucalli ‘Sticks on Fire’) is the most common look-alike because it is actually a cultivar of the same species. The only real difference is color. Firestick stems turn bright orange, red, or pink in full sun. In shade, they revert to green, making them nearly identical to the standard pencil cactus.

Appearance: Thin, cylindrical stems with no leaves. Branching is dense and upright.
Color: Green in shade, fiery orange-red in direct sun.
Toxicity: Same toxic sap as the pencil cactus. Not a safe alternative.
Best for: Gardeners who want the look but also want a colorful focal point.

If you already have a firestick, treat it with the same caution as a pencil cactus. Wear gloves, long sleeves, and eye protection when pruning. Keep it away from pets and children.

Rhipsalis Cassutha (Mistletoe Cactus)

This is a true cactus, but it looks nothing like a desert cactus. It has long, thin, hanging stems that are soft and spineless. It is often called the mistletoe cactus or spaghetti cactus. The stems are pencil-thin and branch freely, giving a similar silhouette to a pencil cactus, but with a drooping habit.

Appearance: Thin, green, segmented stems that trail or hang.
Color: Bright green, sometimes with a reddish tint in cool weather.
Toxicity: Non-toxic to humans and pets. Safe for homes.
Best for: Hanging baskets, shelves, or as a trailing accent in a mixed planter.

The mistletoe cactus is a jungle cactus, not a desert plant. It likes bright, indirect light and regular watering. It will not tolerate full, hot sun or long dry spells. This is a great choice if you want the pencil look but need a pet-safe option.

Stapelia Gigantea (Zulu Giant)

This is a succulent from the stapeliad group. Its young stems are upright, green, and have four distinct angles. They look like a thicker, ridged version of a pencil cactus. As the plant matures, the stems spread and lie flat on the ground. The real surprise is the flower, which is huge, star-shaped, and smells like rotting meat.

Appearance: Thick, four-angled stems with soft teeth along the edges.
Color: Pale green to gray-green, sometimes with purple mottling.
Toxicity: Non-toxic. The sap is clear and harmless.
Best for: Succulent collectors who want a weird, low-maintenance plant.

Stapelia is not a true cactus. It is a succulent from South Africa. It grows well in bright, indirect light and needs well-draining soil. The stems are soft and fleshy, so they do not have the rigid, woody look of a mature pencil cactus. But for a young pencil cactus, it is a decent match.

Euphorbia Milii (Crown Of Thorns)

This is another Euphorbia, but it looks very different from the pencil cactus. It has thick, gray, spiny stems that grow upright. The leaves are small, oval, and grow only near the tips. In full sun, the leaves drop, leaving bare, pencil-like branches. The stems are thicker than a true pencil cactus, but the overall form is similar.

Appearance: Thick, woody stems with prominent spines. Leaves cluster at the top.
Color: Gray-green stems, green leaves, and small red, pink, or yellow flowers.
Toxicity: Toxic sap, but less dangerous than the pencil cactus. Still handle with care.
Best for: Gardeners who want a flowering succulent with a similar growth habit.

Crown of thorns is a good middle ground. It has the upright, branching habit of a pencil cactus, but it is easier to manage because it grows slower and stays smaller. It also flowers almost year-round, which is a nice bonus.

Euphorbia Lactea (Dragon Bones)

This is a close relative of the pencil cactus. It has thick, green, triangular stems with white or silver markings along the ridges. The stems are upright and branch freely, creating a candelabra shape. It is often sold as a grafted plant with a crested top, but the natural form looks like a thicker pencil cactus.

Appearance: Thick, three-angled stems with white mottling.
Color: Green with white or silver streaks.
Toxicity: Toxic sap, similar to pencil cactus. Wear gloves.
Best for: Collectors who want a sculptural, exotic look.

Dragon bones is a bit thicker than a pencil cactus, but the branching pattern is very similar. It is a slow grower, so it is good for small spaces. It needs bright light and very little water.

Euphorbia Tirucalli ‘Rosea’ (Pink Pencil Cactus)

This is another cultivar of the pencil cactus. It is sometimes called the pink pencil cactus because the new growth is a soft pink or coral color. As the stems age, they turn green. It is less common than the firestick, but it is often sold in nurseries as a novelty.

Appearance: Thin, pencil-like stems with pink tips.
Color: Green with pink or coral new growth.
Toxicity: Toxic sap. Same dangers as the standard pencil cactus.
Best for: People who want the pencil look with a softer color palette.

This plant is not a safer alternative. It is just a color variant. If you are allergic to latex, avoid this one entirely.

Sedum Morganianum (Burro’s Tail)

This is a trailing succulent with small, overlapping, bead-like leaves. It does not look like a pencil cactus at first glance. But when the leaves fall off due to stress or age, the bare stems look like thin, green pencils. It is a distant visual cousin, but worth mentioning for succulent lovers.

Appearance: Trailing stems covered in plump, blue-green leaves.
Color: Blue-green to gray-green.
Toxicity: Non-toxic. Safe for pets and children.
Best for: Hanging baskets or tall pots where the stems can cascade.

Burro’s tail is not a true look-alike, but it shares the pencil-thin stem structure when the leaves are sparse. It is a good, safe choice for a succulent collection.

Huernia Zebrina (Lifesaver Cactus)

This is a small stapeliad with thin, upright, toothed stems. It looks like a miniature pencil cactus. The stems are green with purple or maroon markings. It grows in a clump, forming a dense mat of pencil-like stems. It is non-toxic and easy to grow.

Appearance: Thin, five-angled stems with soft teeth. Upright then spreading.
Color: Green with purple mottling.
Toxicity: Non-toxic. Safe for homes.
Best for: Small pots, windowsills, and dish gardens.

Lifesaver cactus is a great choice if you want a pencil-like plant that stays small. It also produces beautiful, star-shaped flowers that look like a candy lifesaver, hence the name.

How To Tell The Difference

It can be hard to tell these plants apart, especially when they are young. Here is a quick comparison table to help you identify what you have.

Key Identification Points

Look at the stems closely. The pencil cactus has smooth, round, finger-thick stems. Firestick is the same, but with color. Rhipsalis has soft, segmented stems that hang. Stapelia and Huernia have angled stems with soft teeth. Crown of thorns has thick, woody stems with hard spines.

Stem shape: Round and smooth = pencil cactus or firestick. Angled or ridged = stapelia or huernia. Flattened or segmented = rhipsalis.
Spines: No spines = pencil cactus, firestick, rhipsalis. Soft teeth = stapelia, huernia. Hard spines = crown of thorns.
Sap color: White, milky sap = Euphorbia species (toxic). Clear sap = stapelia, huernia, rhipsalis (safe).
Growth habit: Upright and branching = pencil cactus, firestick, crown of thorns. Trailing = rhipsalis, burro’s tail. Spreading mat = stapelia, huernia.

If you are still unsure, take a photo and use a plant identification app. Or ask a local nursery. Do not touch the sap of any Euphorbia until you are sure of the species.

Safe Alternatives For Pets And Kids

If you have pets or small children, you should avoid all Euphorbia species. The sap is a serious health risk. Instead, choose one of these non-toxic look-alikes.

Best Non-Toxic Pencil Cactus Look-Alikes

These plants are safe to touch and ingest in small amounts. They are also easy to find online or at garden centers.

Rhipsalis Cassutha: Soft, trailing, non-toxic, and very forgiving.
Stapelia Gigantea: Upright, thick, and non-toxic. The flower smells bad, but the plant is safe.
Huernia Zebrina: Small, clumping, and non-toxic. Perfect for desks.
Sedum Morganianum: Trailing and non-toxic. The leaves fall off easily, but the plant is harmless.

These are all succulents, so they need similar care to a pencil cactus. They like bright light, well-draining soil, and infrequent watering. They are also all easy to propagate from cuttings.

Care Guide For Pencil Cactus Look-Alikes

Most of these plants have similar care requirements. They are all drought-tolerant and prefer to be left alone. Here is a general care guide that works for most of them.

Light Requirements

All of these plants need bright, indirect light. Some, like the firestick and crown of thorns, can handle a few hours of direct morning sun. But too much hot afternoon sun can scorch the stems. A south-facing window with a sheer curtain is ideal. If the stems start to stretch or become pale, they need more light.

Watering Schedule

Water deeply, then let the soil dry out completely before watering again. In the growing season (spring and summer), water every 1-2 weeks. In the winter, water once a month or less. Overwatering is the most common cause of death for these plants. If the stems feel mushy or look yellow, you are watering too much.

Soil And Potting

Use a well-draining cactus or succulent mix. You can also make your own by mixing regular potting soil with perlite or coarse sand in a 2:1 ratio. Make sure the pot has drainage holes. Terracotta pots are great because they wick away excess moisture.

Temperature And Humidity

These plants prefer warm temperatures between 65°F and 85°F. They can tolerate cooler temperatures down to 50°F, but they will not survive frost. Keep them away from cold drafts and air conditioning vents. They do not need high humidity. In fact, too much humidity can cause rot.

Fertilizing

Feed once in the spring and once in the summer with a diluted, balanced liquid fertilizer. Do not fertilize in the fall or winter. Over-fertilizing can cause weak, leggy growth.

Propagation Methods

Propagating these plants is easy. You can grow new plants from stem cuttings. Here is a step-by-step guide.

How To Propagate Stem Cuttings

Use a clean, sharp knife or scissors.
Cut a healthy stem that is at least 4 inches long.
For Euphorbia species, dip the cut end in water to stop the sap flow. Then let it dry for 3-5 days until a callus forms.
For non-toxic species like rhipsalis or stapelia, let the cut end dry for 1-2 days.
Plant the cutting in a small pot with moist, well-draining soil.
Place the pot in bright, indirect light.
Water lightly every few days. Do not soak the soil.
Roots should form in 2-4 weeks. You will see new growth at the tip.

Propagation is a great way to expand your collection or share plants with friends. Just remember to wear gloves when handling Euphorbia cuttings.

Common Problems And Solutions

Even easy succulents can have issues. Here are the most common problems you might face with these look-alikes.

Yellowing Or Soft Stems

This is almost always a sign of overwatering. Check the roots. If they are black or mushy, the plant has root rot. Remove the rotten parts, repot in fresh, dry soil, and reduce watering.

Stems Falling Over

This can happen if the plant is not getting enough light. It stretches and becomes top-heavy. Move it to a brighter spot. You can also stake the stems or prune them back.

Pests

Mealybugs and spider mites are the most common pests. They look like tiny white cottony spots or fine webbing. Wipe the stems with a cotton swab dipped in rubbing alcohol. Repeat every few days until they are gone.

No Growth

If the plant is not growing, it is probably dormant. This is normal in the winter. In the summer, it may need more water or fertilizer. Check your care routine.

Frequently Asked Questions

Here are answers to common questions about pencil cactus look-alikes.

Is The Firestick The Same As The Pencil Cactus?

Yes, the firestick is a cultivar of the same species, Euphorbia tirucalli. It has the same toxic sap. The only difference is the color of the stems.

Can I Touch A Pencil Cactus?

No, you should not touch the sap. The latex can cause severe skin irritation, blistering, and temporary blindness if it gets in your eyes. Always wear gloves and eye protection when handling it.

What Is The Safest Pencil Cactus Look-Alike?

Rhipsalis cassutha (mistletoe cactus) is the safest. It is non-toxic, soft, and easy to care for. It is a true cactus, but it has no spines.