Houseplant · Asphodelaceae
Aloe Vera
Aloe vera
Hand it bright light, gritty soil, and a dry stretch between drinks, and aloe powers along on next to nothing.
Bright indirect
50–86°F · 10–30°C
USDA 9–11
12–24 in · 30–60 cm
Overview
Aloe vera pulls its weight like few succulents ever do. Those fat, gel-loaded leaves earned it the nicknames burn plant and first-aid plant, and the same chunky build lets it brush off a watering you forgot. Born in parched country, it banks its own moisture and rides out the dry stretches.
Few houseplants forgive as freely. Park it in a bright window, root it in a mix that drains fast, and let it go bone dry between drinks. Cross just one line and it sulks: soggy roots topple more failing aloes indoors than anything else.
Count on a real perennial that climbs slowly and sticks around for years, pushing up pups around its base that pot straight into fresh plants. Grow a mature one outdoors in a warm region and it may even fire up a tall spike of tubular yellow to orange flowers.
Care
The short version: chase bright light, plant in gritty fast-draining soil, and pour a deep drink only after the pot bakes fully dry. Go light on feeding, hold it warm, and never leave it standing in water.
Light
Aloe craves bright light, so give it a sunny window or a perch that banks several hours of sun. Ease it in and it will take full sun in stride, but jump a plant straight into harsh rays and it burns, while parking it somewhere dim turns it pale and stretched.
Water
Here is where growers stumble. Let the soil go bone dry, then pour a deep drink until water runs from the bottom, and resist touching it again until the pot dries out fully. A pot left soggy or sitting in a saucer is exactly what rots the roots and crown.
Soil
Pot it in a gritty cactus or succulent mix that sheds water in seconds, never a dense soil that clings to moisture. Aloe leans slightly alkaline, near a pH of 7.0 to 8.5, which most cactus blends already land close to.
Temperature
Plain room warmth keeps it happy, anywhere across 50°F to 86°F (10°C to 30°C). Frost is a deal-breaker, so haul any plant that summered outside back in well ahead of the cold.
Humidity
Bone-dry air bothers it not one bit, since this is a low-humidity desert plant. No target number to chase, no misting required.
Feeding
Aloe runs lean on food. A dilute balanced houseplant fertilizer now and then across spring and summer covers it, and forgetting entirely costs the plant almost nothing.
Pruning
Barely anything to handle here. Slice off shriveled or dead lower leaves at the base with a clean knife, and clear away a spent flower stalk once it wraps up.
Repotting
Bump it up every 2 to 3 years, or sooner the moment pups jam the pot and roots shove through the drainage holes. Step up one pot size into fresh gritty mix and a container that drains clean.
Size & spacing
Indoors it climbs to roughly 12 to 24 inches (30 to 60 cm) tall and fans out 12 to 35 inches (30 to 90 cm) wide as the clump builds. Hand it a pot roomy enough for the offsets it keeps tossing up.
Troubleshooting
Nearly every aloe hiccup circles back to one of three things: water, light, or the pot. Read the leaves closely and they hand you the answer. Find your match below, then chase down the real cause instead of patching the symptom.
Soft, mushy leaves browning at the base
Mushy, see-through leaves near the base spell root and crown rot, and the culprit is far more often a heavy hand with the watering can than a dry pot. Soil that never dries chokes the roots of air, and the bottom leaves collapse into slime. Quit watering at once, tip the plant out, trim every rotted root and slimy leaf with a clean blade, and start it over in fresh gritty mix in a pot that actually drains.
Fix:
- Stop watering and let the soil dry out
- Remove the plant, cut away rotted roots and mushy leaves with a clean blade
- Repot into fresh gritty succulent mix in a pot with drainage holes
Thin, curling, or wrinkled leaves
A healthy aloe packs water into fat leaves, so when those leaves flatten and wrinkle the tank has simply run empty. Chalk it up to plain drought stress, and take heart, because the rebound is quick. Soak the pot until water pours from the drainage holes, then hold off and wait for the soil to bake bone dry before the next drink.
Fix:
- Water thoroughly until it drains from the bottom
- Resume a regular deep-but-infrequent watering schedule
Reddish-brown or scorched patches on the leaves
Pale, scorched blotches mean sunburn, the price of jumping into fierce sun too quickly, and it is no disease at all. Carry an aloe straight off a windowsill into blazing outdoor light and the side catching the strongest rays cooks. Pull it back into bright indirect light to recover, then build it up to harsher sun across a week or two so it can toughen for the move.
Fix:
- Move the plant to bright indirect light
- Acclimate gradually to stronger sun over one to two weeks
Toxicity
Aloe plays it safe for people but toxic to pets. The clear gel powers burn creams and lotions, while the bitter yellow latex riding just under the leaf skin packs saponins and anthraquinones like aloin that flush the gut. The ASPCA flags aloe as toxic to cats, dogs, and horses, so stash it where pets and small children can never get a bite.
Toxic to
Cats · Dogs · Horses · Rabbits · Livestock · Birds · People
Cats Moderate
Bite into the leaves and a cat tends to throw up and run loose stools, often turning picky about food and slumping into a dull, listless mood. Keep an eye out for trembling or red-tinged urine, both flags of a heavier dose.
Dogs Moderate
A dog travels the same road as a cat: vomiting, diarrhea, and a sunk, low spirit. Push past a small taste and the trembling starts and the urine takes on a reddish cast.
Horses Moderate
That bitter latex flushes a horse right out, so look for diarrhea, a dragging manner, and zero interest in feed. Trembling can trail a larger mouthful of the leaves.
Rabbits Toxic
The very anthraquinones that flush other pets slam straight into a rabbit's gut. Stash aloe well beyond reach, because a rabbit can't nibble it the safe way it grazes other greens.
Livestock Toxic
Let cattle, goats, or sheep browse aloe and they swallow the purging latex, then scour hard for it. Fence the plant off anywhere stock can wander to it.
Birds Toxic
Aloin storms through a bird's tiny frame as a fierce laxative, so a nosy parrot or chicken has no business getting near the plant.
People Caution
Plenty of human products lean on the clear inner gel, yet the yellow latex riding just under the skin is a brutal laxative that cramps the gut and belongs nowhere near a mouth. Keep whole leaves clear of children, who swallow both layers in a single bite.
This is a medicinal-for-people, toxic-to-pets plant; the inner gel differs from the toxic latex, but pets chewing whole leaves ingest both.
Helpline numbers
United States
ASPCA Animal Poison Control: (888) 426-4435 (fee applies)
Poison Control: (800) 222-1222
Canada
Poison Centres: 1-844-764-7669
Varieties
Nearly all aloe sold as aloe vera is one and the same plant, but a couple of forms surface often enough to recognize by name.
Aloe vera 'Chinensis'
Look for thicker cream speckling across the leaves and a looser, lower-sprawling habit instead of the bolt-upright shape of the standard plant.
Aloe vera var. barbadensis
Here is the medicinal workhorse, raised commercially for fat, gel-stuffed leaves that feed countless skin products.
How to propagate
Aloe clones itself almost on autopilot, mostly through the pups crowding its base. Divide a clump or sow seed if you like a project, though seed drags out the long way around.
Offsets & pupsEasy
Spring to summer during active growth · 4 to 8 weeks to root and establish
Nothing beats the little pups clustering around the parent's base for fast, free new plants. Tackle the job in spring or summer while growth is firing, leave any cut to dry and callus over a day or two, then settle each pup into gritty mix. Allow 4 to 8 weeks for it to root and dig in.
DivisionEasy
At repotting in spring · 4 to 8 weeks
Repotting day in spring opens the door to division: a packed clump that has pushed up several rooted crowns pulls apart by hand, and each crown goes into its own pot. As with the pups, count on 4 to 8 weeks before the divisions get going.
SeedModerate
Spring, warm conditions · Several months to a year
Seed is the patience game and seldom pays off. Scatter it across gritty mix in spring and hold it warm, but brace for several months to a year of waiting on a true plant. Pups deliver the identical result in a fraction of the time.
Myths
Aloe gel is good for people, so the whole plant is safe for pets to chew.
Two very different substances hide in one leaf: the clear gel humans reach for and the bitter yellow latex tucked just under the skin. Crunch a whole leaf and a pet downs both, and that latex carries saponins plus anthraquinones such as aloin that trigger vomiting and diarrhea. The ASPCA lists aloe as toxic to cats, dogs, and horses, so park it well out of their reach.