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Yellowing Leaves
Yellowing Leaves
Q. Once the leaves on a plant begin
to turn yellow due to say overwatering or
underfertilizing will the same leaves ever
green up again? Or should you just pluck
them off?
A. Good question! I've never seen one turn green once it's become yellow. but it seems like it should since the circulation system is still in place. Yellowing is caused by: low nitrogen low light too much or little water low iron low or high pH What we studied is that once a leaf turns yellow
it rarely will green up. In some cases it will with an application of high nitrogen food. I have seen bad cases of iron deficiency and giving the plant liquid iron has greened up the foliage from what it was suffering
called chlorosis. The cells shut down once the nitrogen is not there to assist making chlorophyll. Studies have been done and I am sure are still but what we have available commercially to apply to our indoor/outdoor plants
there is not one to rectify the yellowing due to deficiency or a watering problem. But some times a plant is lacking a 'minor element' and that is why it is important to use a fertilizer marked with the various elements inside.
I remove all yellow leaves off my violets.
I have never seen an outer one green up
but I sure have seen the tiny yellow ones
inside green up once I applied high nitrogen.
Many times the soil mix being used is locking
the food in so it is not readily available
to the plant. Too low or high pH has a similar
effect so if you are seeing this a lot out
of the ordinary I would test the soil and
adjust to the more neutral 7.0 pH.
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