Q.Leaves are curling on umbrella tree
My umbrella tree has leaves that are curling under. There are no brown spot on the leaves; they are all green. What is causing my plant to do that, and how can I fix it?
If you see no signs of pests or disease, check the soil. Make sure the soil is well draining. If the roots don't have oxygen, it can cause drooping of the plant or even the cupping leaves.
Make sure the soil is drying slightly between watering.
Your plant needs bright but indirect light. It may not be receiving enough light during the winter months, especially the top and bottom of the plant.
Here is a link to refresh you on the care requirements.
https://www.gardeningknowhow.com/houseplants/schefflera/schefflera-plant-care.htm