15-year-old sago palm: fronds yellowed, black spots, drooping. Repotted 5 months ago.
| Problem | Signs | Treatment |
|---|---|---|
| Fungus | Yellowing, black spots | Propiconazole fungicide (spray to drip, repeat 2–3× weekly) |
| Scale insects | Bumps on fronds | Lightweight horticultural oil (spray, repeat weekly ×3). Can mix with propiconazole. |
| Repotting stress | Drooping after repot | Pot up 1 size only. Firm soil. Keep stem uncovered. No saucer water. |
| Overwatering | Yellowing, rot risk | Water thoroughly, drain completely. Saucer must stay dry. |
Address all issues simultaneously for best recovery.
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