When to Transplant

So i had a question guys....Planted my 8 babys into 12oz and 16oz cupnd 2 never sprouted through the soil and one died so i have 5 left now...Anyways they are about 3 inches or so now and I am wondering when it is time to transplant these into the ground. I am worried about animals and pests eating them but also worried about stunted growth from leaving them in the cups to long. Any help would be great thanks

Anyone? Was thinking about transplanting them into larger pots for a week or 2 untill they get big about a 9+ inches....Anythoughts....Have them hiding from my parents but growin outside in the cups right now

i dont hide plants from mother cause im the father but anyway i transplant between weeks 2 to 4 depending on how health they look ivery health seedling 2 weeks adv 3 weeks puny 4 weeks i start about 3/4 full with soil and add last as plant grows and gets lanky if plant gets too lanky i transplat it deeper sometimes up past first round leaves and first single bladed pointed sarrated leaf i some times cut leaves and put a little rooting jel on the spots and transplant all the way up to first set of 3 bladed leafs

but thats me
1 Love

well, i would cut a few holes at the bottom of the cup, when you start seeing the roots poke out, then its time.

With 16oz cups I would say between weeks 2-4. I also use 16oz beer cups to start my plants and like to let mine go more towards 3-4 weeks before I transplant them. I use the clear cups because I can see when the roots engulf the outside of the cup.