Troubleshooting Summer Jasmine Leaf Drop and Discoloration in Mild Winters

Symptoms

Three large summer jasmine plants in Rome suddenly losing many leaves. Leaves yellow, some with spots. New growth also discolored. Mild winter. Monthly Miracle-Gro applications.

Possible Causes

• Nutrient imbalance (excess nitrogen from Miracle-Gro, lack of phosphorus/potassium).
• Watering issues (over/under).
• Fungal disease (leaf spots).
• Mild winter disrupting dormancy.

Recommended Steps

1. Stop fertilizing temporarily.
2. Check soil moisture; water deeply but allow surface to dry.
3. Inspect leaves/stems for pests (spider mites, scale).
4. Consider a soil test to guide targeted fertilization.
5. If fungal spots present, apply a fungicide labeled for ornamental vines.

Expert is researching further; a definitive diagnosis may require local extension assistance.