- Joined
- Nov 13, 2019
- Messages
- 1,796
- Reaction score
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- Location
- Riverside/Pomona CA
- Hardiness Zone
- 9
- Country
To me it looks like an age and water issue. The interior leaves and branches will brown and drop if the plant gets stressed, especially drying out. I suggest a good soaking once or twice a week , depending on rain and heat. Fungicide won't hurt but won't help either.