I’m growing vinca from seeds under aero garden lighting. Why they had no issue germinating I noticed some of the seedlings are turning yellow. I’m growing them in paper cups with no holes except for one that is in a ceramic pot. The one in ceramic pot (with a hole on the bottom) is growing much faster and without turning yellow. Would the ones in paper cups start growing better with normal green leaves if I made holes on the bottom of the cups? Also watering frequency is as the soil gets dry?
