Saving a Rotting Cactus: Watering and Light Corrections

Symptoms

A 4-month-old cactus (round, green, orange blossom) shows basal rot: base mushy inside, roots appear fine. Watered every 2-3 weeks in cactus soil, moderate light from skylight.

Diagnosis

Rot at the base indicates overwatering. This species originates from extremely arid deserts; it needs very little water—especially in winter.

Treatment

• Stop watering completely until plant firms up.
• Move to a sunnier location (direct light preferred).
• Water as little as once a month or a few drops weekly.
• Ensure pot has excellent drainage; use gritty cactus mix.

Prevention

Mimic natural drought cycles. Other healthy cacti on same regimen suggest this individual may be more sensitive or have a hidden root issue.