Aloe Vera

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Hours of sun on its leaves in a south or west window keep its gray-green color strong and give a mature plant its best shot at blooming. Set back from the glass, bright but sunless, it gets by.

An east window, with its morning sun, still sits within what it handles: NC State counts 2-6 hours as workable partial sun.

Penn State ties its color to sun, so a dull, faded rosette likely wants a sunnier seat. In a dim winter, a grow light can make up the missing hours (Penn State Extension).

It can’t take frost (Penn State Extension), so a summer outdoors ends before the first cold night; NC State suggests starting it out there in partial sun. Its wild home is the sun-baked Hajar Mountains of northern Oman (POWO), so a sunny window is the closest thing to home you can offer it.

A soak every 2-3 weeks in summer and every 3-5 weeks in winter, with the soil drying to the bottom of the pot between. A forgotten drink costs it little; too many can rot the roots.

Its leaves already carry the water it lives on, so what the roots want is soil that dries fast. NC State calls a clay pot with several drainage holes the best home for it, and Penn State Extension suggests either a cactus and succulent blend or equal parts potting soil, sand and perlite.

That pairing does the patient work for you: clay breathes moisture off the sides, and grit keeps water from pooling around those thick roots between your long-⁠spaced soaks.

Gone for a while? A month is fine if it’s watered the day you leave; its leaves hold water for the dry spell.

Thick, toothed leaves fan up and out from a low center, 1-2 feet tall and wide. Set it on a sunlit sill or stand in a wide clay pot, and lift out the pups crowding its base to give them pots of their own.

Each leaf can run up to 18 inches (NC State), rising from a stem so short and stout it stays hidden under the rosette. Seen from above, that starburst shows best: a deep sill, a side table by a sunny window, a low shelf at hip height.

When it moves up a pot, about every two years, Penn State Extension suggests leaving 1-1.5 inches between root ball and rim, and setting the plant so its lowest leaves sit just above the soil rather than buried in it.

The ASPCA notes a chewed leaf may bring vomiting, lethargy, or diarrhea in dogs and cats. For kids, NC State lists cramps and diarrhea; the laxative sits in the yellow latex, not the clear gel.

The clear gel is considered edible; it’s the yellow latex just under the leaf’s skin that acts as a strong laxative.

Aloin, one of the plant’s anthraquinone glycosides (Pet Poison Helpline), is what gives a nibbler’s gut a rough day, one that usually passes on its own. Saponins are in the mix too (ASPCA). NC State lists abdominal cramps, diarrhea, and red urine, and rates the overall severity low.

If you use the gel on skin, cut away the outer leaf, keep only the gel, and test a small patch first, since the latex can irritate skin (NC State).

Most nibbles settle 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.

With a nibbler at home, give it the sunny window in a room they rarely visit, and pick up any broken leaf rather than leaving it on the floor.

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 66-81°F, and it shouldn’t sit below 50°F. Humidity can drop to 10% without trouble.

Temperature

66-81°F

Mealybugs are the common guest, tucked into the leaf bases and the middle of the rosette. Scale can settle on leaf surfaces and bases, and aphids favor new center leaves and flower stalks.

• Mealybugs
• Scale
• Aphids

Not many. Mealybugs and scale turn up now and then, and root rot if the soil stays wet.

Mealybugs look like tufts of white cotton tucked where the leaves meet; 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.

Root rot shows as leaves going soft and mushy from the base up. SDSU Extension says there’s no cure once it’s advanced, so catch it early: let the pot dry out completely and water less often. If the base is gone, pot up a healthy pup and start again.

Brown or rusty spots on the leaves are aloe rust or another leaf fungus, which cool, damp air brings on. Cut off the worst leaves at the base and keep water off the leaves.

Feed once a month from April through September, and not in winter. Lift out offsets with roots attached when they appear, and repot slightly larger when roots fill the pot. Remove dried lower leaves any time.

• Feed6× a year
• Repot1× a year
• Divide1× a year
• Clean leaves1× a year

A gritty cactus mix that drains fast, in a pot with a drainage hole. Clay pots are best (per NC State Extension).

Repot every two years, into a pot only slightly bigger; UF/IFAS warns that too big a pot holds water that rots the roots. Spring or summer is the time, and the pups can come off then (see Propagation).

Food is optional: SDSU Extension says it usually needs none. If you like, a cactus fertilizer once a month in summer is plenty; don’t feed it in winter.

Fleshy gray-green spears fan out from the center, each edge lined with small teeth. The skin is smooth and slightly glossy, and the leaves leave part of the soil showing.