Aloe Vera Plant Care in Pots: Brown, Soft or Thin Leaves and Pups

Most aloe vera plants don’t die of neglect. They drown. Good aloe vera plant care in pots comes down to a gritty, fast-draining mix, a pot that breathes, and watering only when the soil has dried right through, which in monsoon may mean not at all. This guide shows how to tell sun stress from rot, why leaves go thin or floppy, and how to turn the pups around the base into new plants.

The right pot and potting mix for aloe vera

Aloe is a succulent. Its thick leaves are water tanks, built for dry, stony ground where rain comes in bursts and drains away fast. The roots are shallow and wide, and they rot quickly if they sit in wet soil for days. So the pot and the mix matter more than anything else you do.

Pot

Unglazed terracotta (the plain red clay pot) is the best choice. Clay lets water evaporate through its walls, so the soil dries faster after watering. It’s also heavy, which stops a big, top-heavy aloe from tipping over. Plastic and glazed ceramic work if you water less often. Whatever you use, it needs a drainage hole. Choose a pot only 3 to 5 cm wider than the root ball; a huge pot holds a big wet mass of soil that the roots can’t reach, and that’s where rot starts.

Potting mix

1. Mix 1 part ordinary potting soil or garden soil with 1 part coarse material: builder’s sand (the gritty kind, not fine silt), crushed brick pieces, or perlite.
2. Add a small handful of compost per 5 litres of mix, no more.
3. Squeeze a damp handful. It should crumble apart when you open your hand, not hold together like dough.
4. Put a few pieces of broken pot or brick over the drainage hole so the soil doesn’t wash out.
5. Plant the aloe at the same depth it was growing before, with the base of the leaves sitting above the soil.
6. Wait 5 to 7 days before the first watering, so any roots damaged in repotting can seal over.

A quick way to test a mix you already have: water the pot and time it. If water sits on top for more than a few seconds before soaking in, the mix is too heavy for aloe.

How to water aloe vera through the year

Here’s the one rule. Water deeply, then wait until the soil is dry all the way down before you water again. Push a finger or a wooden skewer 5 cm into the soil. Any damp soil on it means wait.

These are starting points, not a timetable. A small pot on a hot roof dries far faster than a big pot in a verandah. Monsoon is the dangerous season, because the air is humid, the sun is weak and rain keeps topping the pot up. If your aloe sits in the open, move it under a roof or a chhajja from July to September. Never leave water standing in the saucer, which also stops mosquitoes breeding in it.

Why is my aloe vera plant turning brown, red or soft?

This is the question people ask most, and the answer hangs on one thing: is the leaf firm or soft? Press it gently between finger and thumb.

Red or brown and firm: sun stress

In 45°C heat on a bare roof, or after being moved suddenly from a shady room into full sun, aloe makes a red pigment to shield itself, a bit like a sunhat. The leaves turn reddish or coppery but stay plump. It isn’t dying. Give it bright shade after about 1 pm in May and June, and the green returns within a few weeks once the heat eases. When moving an indoor aloe outdoors, do it over 1 to 2 weeks, starting with an hour or two of morning sun.

Soft, brown or black at the base: rot

This is the one to worry about. Rot starts in the roots, then climbs into the base of the leaves, which go soft, brown or black, and may smell sour. Act the same day.

1. Tip the plant out and shake off the wet soil.
2. Cut away every soft, dark root and leaf with a clean knife, back to firm, pale tissue.
3. Leave the plant in dry shade for 2 to 3 days so the cuts dry and seal.
4. Replant in fresh, dry, gritty mix in a clean pot, and don’t water for a week.

If the rot has reached the centre of the stem, save any healthy pups instead; the mother plant usually can’t be rescued.

Thin, curling or floppy leaves

An aloe that has used up its stored water gets thin, concave leaves that curl inwards at the edges. It needs a deep drink, and the leaves fill out again within a week or so. Floppy, pale leaves that bend over at the middle are a light problem. Aloe indoors on a dim shelf stretches and weakens; move it to the brightest window you have, or outside to morning sun.

Black spots on otherwise healthy leaves are often sun scald or water sitting on the leaf in strong sun. White cottony blobs at the base are mealybugs; wipe them off with cotton wool dipped in soapy water.

Aloe pups: how to grow a new plant the right way

Healthy aloe sends up small plants, called pups or offsets, from its roots around the base. These are the reliable way to get more aloe. Wait until a pup is at least 8 to 10 cm tall with four or five leaves of its own.

1. Water the mother plant a day before, so the pups aren’t brittle.
2. Ease the plant out of the pot, or scrape the soil away from the pup.
3. Find where the pup joins the parent. Pull it gently apart, or cut the connecting root with a clean knife, keeping as many of the pup’s own roots as you can.
4. Leave the pup in dry shade for 1 to 2 days until the cut end has dried.
5. Plant it in a small pot, about 10 to 12 cm wide, of dry gritty mix, and wait a week before watering.

A pup with no roots can still root in dry mix; it’s just slower.

Myth: one aloe leaf will grow a whole new plant

This is the viral hack that fails most often. A cut aloe leaf has no growing point, so it can’t make a new stem, and after a few weeks in soil or water it almost always rots or shrivels. Videos of “growing aloe from a leaf” usually show a leaf with a pup tucked in beside it, or a leaf that simply hasn’t died yet. Aloe in a glass of water rots for the same reason: its roots need air. Use pups instead.

Feeding is the other place people overdo it. Aloe grows slowly, and rich food makes weak, floppy leaves. A thin layer of compost once in spring, or a balanced liquid plant food at half the pack strength once or twice between March and September, is plenty. Soaked banana peel water is gentle enough for aloe, though it doesn’t do as much as the internet claims. Don’t feed in winter or during monsoon.

Did you know? Aloe keeps its leaf pores shut through the heat of the day and opens them at night to take in air, which saves water. And a mature, happy aloe vera sends up a tall spike of yellow tubular flowers, usually in late winter or spring.

For cutting a leaf and using the gel, see our guide to cutting aloe and using the gel; this article sticks to the plant. More scrap and plant guides sit in the Zero-Waste Kitchen section.

Aloe vera plant care questions, answered