Plant care guide
Aloe Vera Brown Tips: Thirst, Cold, Sun or Root Rot?
Updated
Why does my Aloe vera have brown tips?
Brown, dry tips on aloe vera most often follow a long dry spell, a cold draft by the window, or a sudden move into strong sun. Brown tips on leaves that are also soft or collapsing while the mix is wet point to root rot instead. A dried-out lower leaf now and then is normal.
What to do first
Feel the leaves and the mix. Water a dry pot thoroughly if the leaves are thin and wrinkled; stop watering and check the roots if they are soft and the mix is wet. Keep the plant above 10 °C (50 °F), away from drafty glass, and raise light gradually.
Aloe vera stores water in its thick leaves, so it is easy to assume it never needs much attention. Brown tips are its way of showing that something has been off for a while. Penn State Extension calls aloe a rugged houseplant, and most browning is fixable (Penn State: Aloe).
The brown tissue will not turn green again. Start by feeling the leaf, then the mix.
Feel the Leaf First
| Leaf and mix | Most likely cause |
|---|---|
| Tips brown and dry, leaves thin and wrinkled, mix bone-dry | Underwatering |
| Tips brown, leaves soft, yellow or mushy, mix damp | Overwatering and root rot |
| Tips damaged on leaves touching a cold window | Cold draft |
| Tan or brown dry patches on the sunny side after a move | Sunburn |
| Brown tips with a white crust on the mix or pot rim | Fertilizer or water salts |
| One or two outer, lower leaves drying completely | Normal ageing |
Iowa State University Extension’s succulent problems guide separates the two water problems. Underwatered succulents have leaves that yellow, shrivel and brown before dropping, with wrinkled stems and leaves. Overwatered ones have soft, mushy leaves and wet soil. It also notes that a dried lower leaf on an otherwise healthy rosette is nothing to worry about.
Underwatering
Aloe can go a long time dry, but not forever. Iowa State warns that roots die when a succulent stays dry too long, and the plant may then recover slowly even after watering.
- Water thoroughly until it drains, then let the mix dry. UF/IFAS says to water when the top 2.5 cm (1 in) is dry (UF/IFAS: Aloe vera). NC State Extension says to let it dry completely between waterings (NC State: Aloe vera).
- In winter, Penn State advises watering just enough to keep the mix barely moist so the leaves do not shrivel.
Overwatering and Root Rot
University of New Hampshire Extension says overwatering is one of the few things that consistently kills aloe (UNH: Aloe). Iowa State explains the trap: as roots rot, the plant shrivels and drops leaves, which looks like thirst. More water makes it worse.
If the mix is wet and leaves are soft:
- Stop watering and let the pot dry.
- Unpot and check the roots. Clemson Extension’s houseplant disorders factsheet describes dead roots as dark and soft.
- Repot into a cactus or succulent mix in a pot with drainage holes. NC State says clay pots are best.
Iowa State notes some plants recover from root rot once allowed to dry out, while advanced rot may mean propagating healthy pieces instead. Our aloe repotting stress guide covers aftercare.
Cold Drafts
UNH says aloe should not be grown in a room that dips below 10 °C (50 °F). Plants near drafty windows may show discoloured foliage or damaged leaf tips. In winter, pull the pot back from the glass at night.
Sunburn
UF/IFAS warns aloe can sunburn when moved from low to bright light too quickly. Iowa State describes the result as brown or tan patches, and says burned areas will not recover. Increase light in steps, especially before a summer outdoors.
Reddish or bronze leaves in strong light are a different thing. Our aloe red leaves guide explains stress colour versus burn.
Salts
Iowa State’s brown leaf tips FAQ links excess fertilizer to brown tips. Clemson describes a white to grey crust on the mix or pot rim as a sign of salt build-up, and suggests drenching the pot periodically to leach salts out. Penn State suggests repotting about every two years to refresh the mix.
Trimming Brown Tips
Iowa State says trimming brown portions with scissors improves appearance, but browning returns if the cause is not fixed. Cut with clean scissors and follow the leaf’s natural point.
Light matters too. UNH recommends a south-facing windowsill, or an unobstructed east or west window. A dim aloe stretches and goes pale; see our aloe etiolation guide.
References
- University of New Hampshire Extension: Aloe
- Iowa State University Extension: Common Problems and Issues of Succulents
- Penn State Extension: Aloe, a Hardy Houseplant
- UF/IFAS Gardening Solutions: Aloe Vera
- NC State Extension Gardener Plant Toolbox: Aloe vera
- Iowa State University Extension: Why does my houseplant have brown leaf tips and edges?
- Clemson Cooperative Extension HGIC 2251: Houseplant Diseases & Disorders
How this guide was put together: University of New Hampshire Extension, Iowa State University Extension, Penn State Extension, UF/IFAS, NC State Extension and Clemson Cooperative Extension guidance.