My best advice would be to flush at the start of your last week. If you use a clearing adgent then you can wait a little longer. Flush good enough so that 50% of your water comes out the bottom.


Green leaves
Str8jeepin4pack Reviewed by Str8jeepin4pack on . Is it necessary to flush? Is it necessary to flush my potted outdoor plants if I've been using Foxfarm products all along? For the last couple of months I've been feeding them Big Bloom & Tiger Bloom along with a worm casting tea. I know if you use chem nutes you should stop feeding two weeks prior to harvest. Rating: 5