Q.Orchids
Can I cut the yellow leaves from orchid plant?

Yellowing leaves on orchids can be from too much light, over feeding, watering issues or too low of temperatures.
The links below will help you with care information.
Use a sterile knife or scissors to remove the leaf from the orchid.
https://www.gardeningknowhow.com/ornamental/flowers/orchids/indoor-orchid-care.htm
https://www.gardeningknowhow.com/ornamental/flowers/orchids/common-orchid-problems.htm