OldMedUser
Well-Known Member
If you're growing in pots and have overfed your plants so that they are burning then flushing can wash out the extra nutes to prevent further burning and allow the plants to use up the extra nutes in the leaves. It's not going to remove the nutes from the plants tho and if it's just a week or so from chopping they'll still have extra salts in the whole plant.Flushing to clean your plants out is a myth. A myth that will never die because of stupid grower logic.
Flushing to clean out your system is completely different...
The plants have to be actively growing to use up stored nutes in their tissues. The N-P-K, Mg and Zinc are all mobile so the plant will pull them out and use them for new growth if they can't find them in the pot.
This is why I find nute charts to be useless if not damaging as they all say full strength right up to a week before chopping. That doesn't leave enough time for plants to use up all the extra nutes as they are barely feeding near the end.