I Just Cant Get It Right

I had a good plant started well two plants i tried fertilizer on one,i guess i put too much becuase it didnt take 30 minutes for it to die and fall over please help how long does it take for the five leaves or seven whatever to grow seems like there retarded or something dont want to grow right HELP

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Get them in some pots!!!!!!!!!!!!!!!!!!!!!!!!!!!! Give the little fellas a chance. Hopefully you've already done this.