That's very deep. Seeds should be no more than 1/2 cm under the soil.
Only water when the soil appears to be in imminent danger of drying out. Keep it moist at all times, but not soggy.
You need to cut the rims of those cups WAY down. Right to almost the surface of the soil. The rims will inhibit air flow and lead to the deadly damping-off fungus.
stinkyattic Reviewed by stinkyattic on . How often should i water my seedlings? I have planted 10 seeds in black gold potting soil in Styrofoam cups. The night before i soaked the seeds for 15 hours. The night before i also soaked the soil in the cups and then poked a hole near the bottom to drain the water. i put the seeds about a centimeter below the soil 3 or 4 days later still nothing Rating: 5