Hi,

The leaves on my Chinese Evergreen do not open up completely, they remain partially rolled up. What could be the reason?

over watering

Please post a photo that shows the entire plant and its pot so we can see how it is potted.

How far is it from the nearest window?

What is your watering routine?

When was it last repotted?

Attached are 2 more pictures as requested. It used to be about 3 feet from the window but a week ago I rearranged my plants and moved it closer to the window but on a lower stand (1st picture ). The top leaves reach the window sill. There are three large windows in this area but VERY little sun. The plants (4 of them) are in this pot for over a year.
The pot can be seen in the 2nd picture. The soil stays moist for very long time so I only water it once in 4-5 weeks. I check with moist meter to see if it gets dry.

Thanks again for addressing my concern.

I don't see any obvious problems, but I do have a few observations that might be helpful.

Protect it from the rays of the sun falling directly on the leaves at any time during the day.

The pot is larger than necessary and the extra soil is the reason it is not drying out sooner. Regular drying out every 7-10 days is important so the roots get the oxygen they need. You may need to provide less water when you do water so it dries out sooner.

Moisture meters are notoriously inaccurate so don't rely on it. Best to use your finger to determine when the top inch of soil has dried.

Is growing light good for this plant or not?

What do you mean by "growing light?"

Grow Lights for Indoor Plants with Red Blue Spectrum.

Yes, Aglaonemas and other low light plants do well under grow lights.