Need Help For Baby Plants

I just started growing two baby outdoor plants that sprouted about 3 weeks ago, but i need help on what i can get to Fertilize the plants and what nutrients i need in the begining and towards harvest end. Also it there any thing to make them grow faster. These are my first plants i've tried to grow on my own and are looking good for now but i'm guessing on everything here on out. Please tell me what i need to do. I water them everyday / every other day, so what else do i do?


Thanks
 
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