i am just wondering why some leaves can go all the way yellow. and sometimes just the tip and edges turn yellow. what causes this yellow color?

i know that nutes burn will cause yellow spots and edges, but im not using nutes. my clones are turning yellow on a few leaves, just round the edges. im guessing it might be shock from when she was cut from the mother plant.?.?

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Heat stress?? whats your temps

Lack of chlorophyll, probably due to (although it can be produced by other reasons) a lack of nitrogen in the soil, which easily gets washed/leached out by frequent waterings, which is why it needs replacing regularly via nutrient feeding.

Nitrogen controls the plants ability to produce proteins for new cell protoplasm and is one of the essential nutrients in the production of acids, enzymes, nucleic acids, chlorohphyll and alkaloids. It's also the main nutrient element responsible for leaf and stem growth as well as size and vigor.

Nitrogen is most active in the younger buds, shoots and leaves in vegetative growth and being a mobile element moves to where it's needed most and that's usually in new leaf growth, which is the reason lower and older leaves start turning yellow when there are limited quanities available.

There's a whole host of other reasons for why leaf edges may yellow and not all of them are down to Nitrogen deficiency, but that is the most common cause in the vegetative growth stage.

Your clones that have not yet produced sufficient roots will use the nutrients from the leafs before it dies, or roots to get more

this could and probobly is the major reason your seeing it. other than that it does sound like it chould be heat stress

thanks guys, just what i needed to know

and yea i was talking about clones that are currently in there " rooting box". they havent even sprouted roots yet. im guessing it was heat stress. but baby grow i think you explained why my plant in soil is a bit yellow, and that helps alot, thanks

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