I have 3 seedlings in solo cups with happy frog soil and covered with plastic wrap. 1 has sprouted and leaves are showing. The other to have broken the surface but still have their helmets My question is when do you remove the plastic wrap? I have read as soon as the seed breaks soil and I have read to leave it on longer
I never use plastic wrap in the first place and mine are always fine 210 watt perpetual box https://forum.grasscity.com/index.php?/topic/1394922-210-watt-3.5-sq-ft-Northern-Lights-and-White-Widow:
Use a soda bottle as a humidity dome. Allows for a little growth of the plant. When its as big as the dome remove.
Lol plastic wrap is fine, I do remove after they break soil. Just keep them in an area with good humidity and light.