i have six two week old plants that are outside but they arnt seeming to grow they are only growing there first set of leaves. how big should they be? i gave them some miracle grow at 1/4 the strength about 4 days ago. what am i doing wrong?

It's hard to just say what's wrong with them by them being outside, need to be more specific...What are you using for soil? What are the temps like? It may still be a bit cold to be outside during the nights, maybe you should try bringing them in at night (if possible). Also, pics are always useful to see......