Again, it all depends on how hot (or nutrient rich) you make the medium. If it aint that hot do it at 2-3 weeks, if it is then yes, I would wait until later in life to transplant... but not that long unless your ready to accommodate some rather large plants. How old are these things again?
Good call. Preparation is key.
The Only time I'll use MG from now on is when I'm getting the seeds started out, after germination, but before they are ready for big girl soil... a little MG seed starting mix with a little extra perilite works.... at least it is right now!
I germinate in plain potting soil with perlite in 4" pots and add nothing for seedling growth until after two weeks, when I transplant them into larger containers using what will be their regular soil mix for their life cycles.The Only time I'll use MG from now on is when I'm getting the seeds started out, after germination, but before they are ready for big girl soil... a little MG seed starting mix with a little extra perilite works.... at least it is right now!
I guess I need to do some googling on him, I'd never heard his name until you mentioned it....
Mine started to show a ever so slight Magnesium deficiency just around the time I transplanted, just in case be prepared for that! Cowboy said to give it a touch of Epson salt to fix it right up, but don't both until you see signs of it....