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Old Schefflera Losing Leaves: Shade or Scale?

A 23-year-old schefflera dropping leaves with brown spots near stem attachment and odorous discharge may be self-shading or have scale insects. Prune heavily (up to half) to open canopy and stimulate bushy growth. Rotate into sun regularly. Check leaf undersides for flickable bumps (scale). If scale, treat with thorough alcohol/soap or horticultural oil sprays.

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