Old Jade Plant (Crassula Ovata) Decline: Powdery Mildew and Watering Fixes

Seasonal Watering Is Critical

• Winter: water only after 10 days dry—often once monthly.
• Summer: weekly when actively growing.
• Jade stores water in leaves/stems; adapted to arid conditions.

White Powder = Powdery Mildew

Fungal disease favored by high humidity/temperature late in season. Symptoms: scabby gray-white spots, distorted growth, premature yellow leaf drop.

Treatment

• Apply fungicide labeled for jade: potassium bicarbonate, sulfur, lime sulfur, or neem oil.
• Remove/destroy fallen diseased leaves.
• Reduce humidity around plant.

Other Common Jade Diseases

• Mealybugs: Cottony bits on leaves/stems. Treat with alcohol-dipped cotton swab.
• Black Ring Disease: Viral, no cure. Remove infected leaves.
• Brown Rot: From overwatering. Cut out with sterile knife, dust with sulfur, repot in fresh soil if roots affected.

Primary Suspect

Chronic overwatering (same schedule year-round) is likely the root cause. Correct seasonal watering first.