My schefflera, which looks healthy, has a sticky residue on its leaves that has even coated a windowsill and the carpet underneath it. Is this a disease or a pest?
Schefflera With Disease
Certified GKH Gardening Expert
This is caused by a pest, either scale or aphids. These articles will help you:
its scale. the plant needs to be treated along with the area where its sticky. scale will attach itself to almost anything and spreads quickly to other plants