Plant care guide
Jade Plant Brown Spots on Leaves: Edema, Sun, Drought or Rot?
Updated
Why does my Jade plant have brown spots?
Brown spots on jade leaves usually come from one of four things: edema (raised, corky bumps after wet mix in cool, dim conditions), sun damage (flat tan or brown patches after a jump in light), drought (spotting and shrivelling in bone-dry mix), or rot (soft, dark tissue in wet mix). Touch and the state of the mix tell them apart.
What to do first
Run a finger over a spot and check the mix. Raised and corky: water less and give more light. Flat and dry on the sunny side: move the plant back and reintroduce sun slowly. Shrivelled in dry mix: water thoroughly. Soft and dark in wet mix: check the roots now.
Brown marks on the thick, glossy leaves of a jade plant look serious, but most causes are cultural and the plant usually pulls through. The marks themselves will not fade. What matters is stopping new ones.
This page sorts the causes. Each one has its own guide if you need the full fix.
The touch test
Run a fingertip over one spot, then push a finger or chopstick into the mix.
| What you find | Likely cause | Full guide |
|---|---|---|
| Raised, wart-like or corky bumps, often on leaf undersides; mix often wet, room cool | Edema | Jade edema |
| Flat, dry tan or brown patches on the most exposed leaves, after a move or a sunny spell | Sun damage | Jade sunburn |
| Spotting with shrivelled, wrinkled leaves; mix bone dry | Drought | This page |
| White crust on leaves or mix, with dry, burned edges | Mineral or fertilizer salts | Jade mineral deposits |
| Soft, dark, mushy leaves or stem; mix wet; leaves dropping | Overwatering and rot | Jade yellow leaves |
| Dusty or speckled look, loss of green colour | Spider mites | This page |
Raised and corky: edema
University of Maryland Extension’s edema page describes wart-like or crusty raised bumps or blisters on lower leaf surfaces. It happens when the roots take up more water than the leaves lose, and UMD names jade among prone plants. Clemson Extension’s disorders factsheet adds that wet soil, poor light and low temperatures predispose plants to it, especially succulents in winter. Affected leaves will not recover, but more light and less frequent watering stop new bumps.
Flat and dry: sun damage
Iowa State Extension’s succulent problems guide describes sun damage as brown or tan patches on leaves or stems, especially interior leaves or new growth. It follows a sudden change in light. Jade does want strong light: Clemson’s jade plant factsheet suggests four or more hours of direct sun a day. The fix is to make the change slowly, not to keep the plant dim.
Dry and shrivelled: drought
Clemson warns that drought can cause dwarfing, foliage spotting, leaf drop and death in jade plants. Iowa State says underwatered succulents turn yellow, shrivel and brown before dropping, with wrinkled, mottled leaves and stems. Clemson suggests keeping the mix moist but not wet in spring and summer, and letting it dry between waterings in winter.
Soft and dark: rot
NC State Extension’s Crassula ovata profile says overwatering can cause leaf fall and root rot. Iowa State describes yellow, soft, mushy leaves and stems in wet mix. Clemson links root rot to a slow-draining mix or watering too often. Soft brown or black tissue needs a root check, not a spray.
Crust and burn: salts
UMD’s salt deposits page describes white coatings on leaves or on the mix. The salts compete for moisture and can burn tissue. UMD advises flushing from the top with several volumes of clean water and using water low in dissolved minerals.
Pests and sprays
NC State lists aphids, scale, spider mites and mealybugs. Clemson says spider mites can make jade look dusty or speckled and lose its green colour. Treat mealybugs with an alcohol-dipped swab: Clemson warns that insecticidal soap may damage jade plants. See our jade mealybugs guide.
What to do this week
- Note the texture of three or four spots and whether the mix is wet or dry.
- Adjust water first. Clemson advises avoiding splashing water on the leaves.
- Adjust light gradually, keeping the leaves off cold glass in winter, as Clemson advises.
- Keep temperatures steady. Clemson gives 18–24 °C (65–75 °F) by day and 10–13 °C (50–55 °F) at night.
Watch the next new leaves, not the old spots, to judge whether the fix worked.
References
- University of Maryland Extension: Edema of Indoor Plants
- Clemson Cooperative Extension HGIC: Jade Plant
- Clemson Cooperative Extension HGIC 2251: Houseplant Diseases & Disorders
- Iowa State University Extension: Common Problems and Issues with Succulents
- NC State Extension Gardener Plant Toolbox: Crassula ovata
- University of Maryland Extension: Mineral and Fertilizer Salt Deposits on Indoor Plants
How this guide was put together: University of Maryland Extension, Clemson Cooperative Extension, Iowa State University Extension and NC State Extension guidance.