Find Succulents & Cacti conditions by symptom
Pick a symptom you've noticed and review the related conditions.

A black sooty powder or film coats the surface of leaves and stems
- Sooty MoldMonitor; consult a specialist if it worsens
A sooty black residue may appear on leaf surfaces
- Scale InsectsConsider acting within a few days
Affected areas dry out, becoming sunken or papery
- Sunburn / Sun ScaldMonitor; consult a specialist if it worsens
Affected areas turn brown to black and dry out or die
- Frost DamageConsider acting within a few days
Affected tissue becomes water-soaked and collapses easily when touched
- Black Rot / Soft RotAct promptly (isolate, remove the cause)
After thawing, the plant remains collapsed and does not recover
- Frost DamageConsider acting within a few days
An unpleasant odor may be present at the affected site
- Black Rot / Soft RotAct promptly (isolate, remove the cause)
Cacti may develop sunken, discolored patches on their surface
- Frost DamageConsider acting within a few days
Cacti may develop white to brown patches spreading across the surface
- Sunburn / Sun ScaldMonitor; consult a specialist if it worsens
Closer inspection may reveal scale insects or aphids on the plant
- Sooty MoldMonitor; consult a specialist if it worsens
Discolored patches are permanent and do not recover
- Sunburn / Sun ScaldMonitor; consult a specialist if it worsens
Leaf color deteriorates as photosynthesis is impaired
- Sooty MoldMonitor; consult a specialist if it worsens
Leaves become water-soaked in appearance and turn translucent or soft
- Frost DamageConsider acting within a few days
Leaves drop off easily in succession
- Root RotAct promptly (isolate, remove the cause)
Leaves gradually thin, lose color, or appear dull
- Root MealybugsConsider acting within a few days
Leaves may yellow or shrivel in affected areas
- Scale InsectsConsider acting within a few days
Leaves turn pale yellowish-green
- Etiolation (Leggy Growth)Monitor; consult a specialist if it worsens
Lower leaves and the base of the stem become soft and mushy
- Root RotAct promptly (isolate, remove the cause)
Overall plant growth slows and new shoots fail to develop
- Scale InsectsConsider acting within a few days
Part of a stem or leaf suddenly turns black and becomes soft
- Black Rot / Soft RotAct promptly (isolate, remove the cause)
Plant growth stalls without any apparent environmental cause
- Root MealybugsConsider acting within a few days
Plant remains wilted even after watering
- Root MealybugsConsider acting within a few days
Rot can spread rapidly upward or downward through the stem
- Black Rot / Soft RotAct promptly (isolate, remove the cause)
Small white, cream, or brown shell-like bumps attach to stems and leaf bases
- Scale InsectsConsider acting within a few days
Spacing between leaves widens, distorting the natural shape
- Etiolation (Leggy Growth)Monitor; consult a specialist if it worsens
Stems elongate abnormally with wide gaps between nodes
- Etiolation (Leggy Growth)Monitor; consult a specialist if it worsens
The plant develops a spindly, stretched appearance compared to normal growth
- Etiolation (Leggy Growth)Monitor; consult a specialist if it worsens
The plant remains wilted after watering without recovering
- Root RotAct promptly (isolate, remove the cause)
The sooty coating can sometimes be wiped off with a finger or cloth
- Sooty MoldMonitor; consult a specialist if it worsens
The stem base and lower stem turn brown to black
- Root RotAct promptly (isolate, remove the cause)
White waxy or cottony deposits found on roots or near the soil surface
- Root MealybugsConsider acting within a few days
White, cream, or brown discoloration appears on the sun-facing side of leaves
- Sunburn / Sun ScaldMonitor; consult a specialist if it worsens