I have this plant and do not know its name, but recently it has developed strange looking marks. Can you tell me name and how to care for this issue? Thank you.
Thanks for posting the photos. Your plant is a Schefflera ‘Amate. The plant below it with much smaller leaves is a very close relative and is a Schefflera arboricola.
The “blemish” is physical damage to the leaf caused by too much direct sun or possibly the leaf’s touching something very hot or cold. The damage cannot be repaired, but it is not a disease and it will not spread or recur as long as the plant is not exposed to excess sunlight or temperature extremes.