Cylindrical Snake Plant

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Each new spear is an event. A brightly lit window suits it best, and in medium or low light it carries on, its new spears growing less tall and thick.

Round spears catch light from every side, so it can stand square in an east window or right beside a north one without leaning hard toward the glass. NC State also lists dappled light and partial shade, with 2-6 hours of direct sun.

Summering it on a balcony works, with a catch: give it morning sun only, since afternoon rays can sunburn the spears, and bring it back inside once nights dip below 55°F (NC State).

In Angola, Zambia and Zimbabwe, where it grows wild, it turns up on roadsides, coasts and forest edges, in anything from full sun to shade (SANBI). Give it the brightest window you can spare, and it’ll make do with less if that’s what you have.

About every 3-4 weeks, or every 2 in summer, with the pot drying all the way down between. Its thick spears and buried rhizomes store water, so a forgotten watering costs little.

Pot it in a cactus and succulent mix, as NC State suggests. Where the spears fan from the base, water poured from above can settle among them, and NC State warns that wetting the foliage invites leaf spot; aim the spout at the soil’s edge instead.

A dry pot is a light pot, and tall spears are heavy. Penn State Extension notes that the weight of tall leaves can tip a snake plant over, especially when the soil is dry, so a heavy pot keeps it upright.

If a spear point browns and that bothers you, NC State links brown tips across the genus to salts, chlorine and fluoride in tap water, and filtered water or rainwater may help. Either way, the spears carry on.

Gone for a while? A month is fine if it’s soaked the day you leave, and in winter it may not even notice you went.

Inch-thick, round spears slowly rise 1-3 feet in a fan, sharp at every tip. Stage it on a console or plinth out of the walkway, where no one brushes those points, and dust the spears now and then.

Underground, its rhizomes creep sideways and send up new fans, so over the years one pot can become a clump up to about 3 feet wide (SANBI). Penn State Extension says some spread up to 3 feet beyond their container and make a fine focal point: the middle of a sideboard, or alone by a window.

A bent or split spear won’t mend. Cut that one spear off at the soil line and the rest of the fan stays standing around the gap (Penn State Extension). When the clump crowds its pot, lift it out and separate the rhizomes into new plants (SANBI).

Chewing a spear may bring on nausea, vomiting, or diarrhea in a dog or cat, and NC State rates it low severity. A child who eats some may get a passing upset stomach, and the sap may bother bare skin.

Cats may get dilated pupils, and one vet manual lists red-blood-cell damage, but neither is the usual course.

Saponins run through every part of it, from root to flower (NC State). The leaves don’t make easy chewing, either: each one ends in a hard, sharp point (Penn State Extension), and in the wild the stiff, upright leaves help fend off grazing animals (SANBI).

An upset stomach usually passes on its own at home. If symptoms don’t settle, or anything worries you, call your vet or the ASPCA Animal Poison Control Center (a fee may apply). For a child, Poison Control is. The RHS suggests gloves when handling it, which also spares your fingers those tips.

With a chewer at home, set it on a tall stand or a high sill, or in a room they rarely visit, and it can stay.

1. ASPCA: mild for dogs.
2. Merck Veterinary Manual: toxic for dogs (rates the whole genus).
3. Pet Poison Helpline: mild for dogs.
4. ASPCA: mild for cats.
5. Merck Veterinary Manual: toxic for cats (rates the whole genus).
6. Pet Poison Helpline: mild for cats.
7. NC State Extension: mild for kids.

Cats and dogs: Most of the leading sources agree.

Kids: No poison-centre listing; rated from university extension sources.

Happiest at 60-75°F, and it shouldn’t sit below 55°F. Keep it away from cold glass in winter. Humidity can drop to 10% without trouble.

Temperature

60-75°F

Mealybugs are the common ones, so look between the leaves at the base of the fan. Fern scale hides on leaves and leaf bases, and mites and thrips sit on the spears. Vine weevil grubs work in the roots.

• Mealybugs
• Fern scale
• Red spider mites
• Banded greenhouse thrips
• Vine weevil grubs

Very few. Rot from wet soil is the real danger; mealybugs, scale, thrips, and spider mites turn up now and then.

Mealybugs look like tufts of white cotton, often low down where the leaves meet the soil; scale looks like small brown bumps stuck to the leaves. Wipe them off with a cotton swab dipped in rubbing alcohol (a fingernail lifts scale), then check again next week.

Thrips are tiny and slender and leave silvery-⁠gray scars; spider mites leave fine speckling and webbing. Rinse the plant in the shower, and if either comes back, spray it with insecticidal soap.

Rot shows as a leaf going soft or collapsing at the soil line while the soil is still wet, or as sunken, reddish-brown spots where water sat on a leaf. Cut off anything soft at the soil, let the pot dry right out, and water the soil rather than the leaves.

Feed monthly from April to September at half strength. Dust the spears in spring and fall, and remove dead leaves once a year. Repot or divide in spring only when the pot is full, less than once a year.

• Feed6× a year
• Prune1× a year
• Clean leaves2× a year

A cactus and succulent mix, which drains fast, in a heavy pot with a drainage hole: tall leaves make it top-heavy, and a light pot can tip over, especially when the soil is dry.

It likes a snug pot, and crowded plants often look their best. Repot every five years or so, one size up, in spring or summer; that’s also the time to divide it (see Propagation).

Food is optional: an all-purpose houseplant fertilizer at half strength in spring is plenty. More doesn’t help, and extra nitrogen makes it easier to hurt with cold, per UF/IFAS.

Round green spears with fine stripes rise straight up in a fan, each ending in a sharp point. The surface is smooth with a gentle sheen. The spears stand apart, so soil shows between them.