Flushing

Could someone please explain to me flushing. Thank you.

GIVING THE plant plain water for the last 2-3 weeks washes out built up fertilizer salts from the plants...peace gb1

yes like he said but your very last flush use tones of water let it run out the bottom
then cut down the next day

thanks a bunch guys.

Also can be a quick fix to plant problems.When in doubt flush them out!

yup lol
that should be in growing 101