I used to exclusively use the paper towel method for germinating seeds. Now I am trying soil blocks (I found some seeds germinate better if I don't cover them).
And I was wondering when should I take the cube out of my "incubator", transplant them and start exposing them to light.
With the paper towel method, as soon as I see the radicle, I move them to a little 330c pot, cover them just enough, and leave them under lights/sun. But with the soil blocks, I am not sure what would be better.
Should I wait until cotyledons show up (or the seed completely "emerge"), or should I do it as soon as I see the radicle digging into the cube (covering with soil before doing it to protect the roots)?