question about soil

I'm fairly new to growing and i have six plants that are about 5 inches tall. I know its already too late to ask this question but ill ask anyways. Is it ok that i didnt till (i dont know what other word to use) up the soil as far as the roots will go? Or will the roots have no problem going through the hard soil?

Hey Welcome to Rollitup you should post your question in general marijuana growing, you will get alot more views and probably more help, I hope you find what you are looking for