Sansevieria Cylindrica

Overview

The Cylindrical Snake Plant (Sansevieria cylindrica, recently reclassified as Dracaena angolensis), also known as the African Spear Plant, is a striking, architectural succulent. Unlike standard snake plants that have flat, sword-like leaves, this species produces thick, perfectly round, tubular spears that shoot straight up from the soil. Native to the harsh, dry environments of Angola, it has evolved to be one of the most indestructible indoor plants in existence.

It thrives on neglect, requiring water only a handful of times a year. However, a major issue plagues this plant in the retail market. Nurseries frequently sell them with their young, pliable spears tightly braided together. While this looks neat on a store shelf, as the thick, rigid spears mature and expand, the braid acts as a tourniquet. The stems crush and scar each other, cutting off vascular flow and often leading to the death of the plant. Unbraiding a newly purchased plant is highly recommended for its long-term survival.

Light Requirements: Highly Adaptable

The Cylindrical Snake Plant is famous for its extreme light tolerance. It will survive in a dark, windowless office corner where almost any other plant would die in weeks. However, survival does not mean growth. If kept in extreme low light, the plant will simply sit in stasis, never producing a new spear. To see actual, vigorous growth, place it in bright, indirect light near an east or west-facing window. It can even handle several hours of direct, blazing sun once acclimated.

Watering: The #1 Killer

There is really only one way to kill a Cylindrical Snake Plant: overwatering. The massive, thick spears act as giant water reservoirs, allowing the plant to survive severe droughts in the African wilderness.

You must allow the potting soil to dry out 100% completely—all the way to the bottom of the pot—before watering. If you are unsure if it is dry, wait another week. In a low-light environment during the winter, you may only need to water this plant once every six to eight weeks. When it is finally time, soak the pot thoroughly until water flows out the drainage holes, ensuring the root ball is hydrated, and then ignore it again for a month.

Temperature and Humidity

This plant prefers warm indoor temperatures ranging from 65°F to 85°F (18°C - 29°C). Keep it away from freezing drafts, as temperatures below 50°F (10°C) can cause cellular damage to the water-filled spears, turning them to mush. It has zero need for humidity and perfectly tolerates the bone-dry air of centrally heated homes.

Soil and Potting

Because they are so susceptible to root rot, proper drainage is critical. Standard potting soil is far too dense and holds moisture for too long. You must use a fast-draining cactus and succulent mix, heavily amended with coarse sand, perlite, or pumice. Furthermore, Sansevierias have strong, thick rhizomes (underground stems) that spread horizontally. They actually prefer to be somewhat root-bound and have been known to crack thin plastic or ceramic pots when they run out of room.

Fertilizing

This plant is an incredibly slow grower and requires almost no supplemental nutrition. Feed it only once a year, right at the start of spring, using a specialized cactus/succulent fertilizer diluted to half strength. Over-fertilizing can cause the spears to grow too fast, making them weak and floppy rather than rigid and architectural.

Propagation

You can propagate a Cylindrical Snake Plant by cutting a single spear into 3-inch horizontal sections. Ensure you remember which way was "up." Let the cuttings callus over for a few days, then plant the bottom end into dry succulent soil. After a few weeks, they will root. However, note that leaf cuttings will often revert and produce flat, standard snake plant leaves first before eventually pushing out the mature cylindrical spears.

Toxicity

Like all Sansevierias, the Cylindrical Snake Plant contains saponins. If ingested by cats or dogs, it is mildly to moderately toxic, causing nausea, drooling, vomiting, and diarrhea. The rigid, stick-like appearance doesn't usually attract chewing pets, but caution is still advised.