Fertilize 2 week old seedlings or no?

Should I fertilize my 2 week old weed seedling and can I use urine? If som how much?


If you’re growing on soil you can wait a little longer because most soils contain enough nutrients for the first few weeks, For hydro it’s different but I would not recommend urine. Use a high nitrogen fertilizer, maybe half the dose it says on the label an see how your plants react.