Leaves turning red starting with lower ones - reddening leaves

Hey. I'm about a few weeks into flowering growth. She is getting only natural light (it's winter so not very much). I only add water, no nutrients, but they were planted in a nutrient enriched soil (home depot / scott's) that claims to release nutes for months. I don't think it can be a nute problem because my 4 other plants are not turning red and they have the exact same conditions.

I think the pics can explain the problem better than I can. The leaves are turning red, starting from the bottom up. It was just one leaf at first, but it is clearly getting worse.

Please give any advice you can think of! I am really sad and hope my best plant can pull through.

What is the strain you are growing.

If it's not the strain that is causing it, my guess would be a molybdenum deficiency. It's not something you hear about very often, but I suppose it's possible if the soil is lacking. Scroll down about 60%, and check out the top pic... http://www.icmag.com/ic/showthread.php?t=11688 That pic is from late bloom, but the coloring sure does look similar.

P.S. It could also be caused by low temps during the day, and warmer at night.(possibly, other scenarios, too) I've read that they purposely do that over in Thailand or somewhere,lol to give their weed a purplish color, mainly towards the end of bloom.

pepot it!
It needs it.

jawbrodt said:

If it's not the strain that is causing it, my guess would be a molybdenum deficiency. It's not something you hear about very often, but I suppose it's possible if the soil is lacking. Scroll down about 60%, and check out the top pic... http://www.icmag.com/ic/showthread.php?t=11688 That pic is from late bloom, but the coloring sure does look similar.

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I agree, here's the same thread but on RIU:

https://www.rollitup.org/marijuana-plant-problems/216537-self-diagnose-your-plants.html

MetroidThatSmokesTheGanja said:

pepot it!
It needs it.

Click to expand...

AMEN!!

re-pot them they need it bad and when you do put them in the new pot with some plain old dirt to kinda counteract your nute enriched dirt and also since i seen flowers on the one you might want to after re-potting mix a couple tablespoons of black-strap molasses (can get it at any grocery store) in with a jug of plain ole drinking water from the store and for your first watering after re-potting water it deep with that mixture about half the gallon making sure to get good runoff (might want to put it in the bathtub) ..will give you the micro nutrients you are lacking and free up your roots for added burst of bud production

^Agreed with those guys who recommend transplanting. That's the most sure way to make sure the plant gets what it needs, other than loading it with fert and hoping for the best. Just use a different soil than you're using now, even some MG soil would work fine, although some good FF stuff, or similar, would work even better.

jawbrodt said:

^Agreed with those guys who recommend transplanting. That's the most sure way to make sure the plant gets what it needs, other than loading it with fert and hoping for the best. Just use a different soil than you're using now, even some MG soil would work fine, although some good FF stuff, or similar, would work even better.

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naw plain Jane ole potting soil would be the best really he already has nute enriched soil working against him if he goes with MG it will just work harder

^Ahhh, I should've read that closer. Strange that a nute enriched soil would be lacking molybdenum though. Hmm... *scratches head* IDK, I guess it's time to switch from that soil, from now on.LOL

You might also be able to add some trace nutes, but make sure it has everything, before you do.

jawbrodt said:

^Ahhh, I should've read that closer. Strange that a nute enriched soil would be lacking molybdenum though. Hmm... *scratches head* IDK, I guess it's time to switch from that soil, from now on.LOL

You might also be able to add some trace nutes, but make sure it has everything, before you do.

Click to expand...

it is prolly lacking because the small pots didn't have that much in them to begin with and the plant ate it all