Hashyanswered grow question 2 years ago Hi mate. Keep feeding up to one week before harvest. Then water to flush out the nutes. Wait for all them trichomes to be cloudy with a few turning Amber before you harvest. Most pistils will have browned by then also. Regarding the leaves turning yellow, it happens. Remember at this point the plant won't be concentrating on its leaves. It will actually start cannibalising the leaves near the end, especially if it needs more nutrition.