Schefflera arboricola with Scale Insects and Sticky Residue

A "money plant" (Schefflera arboricola) losing leaves, moved to NE window with misting, new growth appeared. Then leaves became sticky with brown spots on half the leaves and sticky web-like threads.

Diagnosis

Brown spots = scale insects (hard shells, suck sap, secrete honeydew). Threads = spider mites or household spiders.

Treatment

Spray all leaf/stem surfaces until dripping with 5 parts water, 1 part rubbing alcohol, squirt of dish soap. Wipe off hard shells with soft cloth. Thorough coverage is key.

Care

• NE windowsill is good.
• Keep pot small; water when top quarter of soil dry.
• Misting unnecessary but harmless.

Expert advice from Will Creed, Interior Landscaper, Horticultural Help, NYC.