Troubleshooting Red-Brown Spots on Coral Cactus (Rhipsalis cereuscula)

Likely Cause: Overwatering

Watering on a fixed weekly schedule is the most common reason coral cactus develops rust-colored spots. Succulents need to dry out completely between waterings; they rot easily if kept too moist.

How to Water Correctly

• Lift the pot after a thorough watering to gauge its weight.
• Wait until the pot feels significantly lighter and the soil surface is pale before watering again.
• Water deeply, then empty the drainage tray within an hour.

Sunlight Requirements

Direct morning sun is beneficial for most cacti and succulents. Half a day of direct light is generally fine, but avoid intense afternoon sun in hot climates.

Immediate Actions

1. Remove any damaged or dead plant parts.
2. Switch to a "soak and dry" watering routine based on pot weight, not the calendar.
3. Ensure the pot has drainage holes and a gritty, fast-draining soil mix.

With proper watering, new growth should be healthy and spot-free.