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Strange discoloring - can't put my finger on it HELP PLZ!

Discussion in 'Marijuana Plant Problems' started by Luchosoto420, Jan 13, 2018 at 8:50 PM.


    Luchosoto420 New Member

    Hi everyone, I'm new to the forum and I hope you're all fine and high.

    I'm writing cause one of my 2-week-old auto-dinafem white widows started showing a strange yellowing on its second set of leaves like 4 days ago, and I can tell it's getting worse as the days progress.

    I'm pretty sure it's not nitrogen deficiency because as you can see on the pics I've attached, this yellowing looks sorta splotchy/mottled/uneven.
    Also, looking very closer, I can see a little browning at the very tips of older plants.

    Plant looks "healthy" otherwise, quite perky, no drooping or wilting either.

    more info:
    -outdoors (summer here in Chile now)
    -never been applied fertilizer yet
    -soil: mix of coco, perlite, worm castings, compost and garden soil[​IMG]
    -soil pH: about 6.5
    -been watered only when soil gets dry 1 inch deep

    The other plant shows no issues (same soil, same light/water regime etc.)

    I'd really appreciate if you could shed some light on my issue here.


    Attached Files:

    SchmoeJoe likes this.

    nmibud Active Member

    It looks hungry to me.

    Luchosoto420 New Member

    you mean water hungry or nute hungry? after I took the pic, I watered the pot from the bottom, that's why the soil looks dry on the surface but it's pretty moist at the bottom.
    SchmoeJoe likes this.

    SchmoeJoe Well-Known Member

    It's definitely nutrient related. 6.5 is good so it's not your ph. It isn't N. Nitrogen deficiency shows as an even yellowing that is stronger at the bottom and fades to healthier green toward the top. Yellowing with blotches and brown spots is about a perfect description of cal/mag deficiency but that plant is way to young for any deficiency in a half decent sized pot.

    Did you mix the soil yourself? The only thing that makes sense from what you've said is that something is hot and burning the plant. Probably the compost. Also, if they're all from seed and only this one is showing the problem it's likely that this is also just a sensitive individual.

    Luchosoto420 New Member

    Thank you for your input. Yes, I mixed the soil myself, (drains quite well), and never had this problem in particular (just slight N def but correct it w/N fert when it shows up).

    Here in Chile the tap water is quite "hard", therefore it shouldn't be that low on Calcium (or maybe she just needs MORE -- nute hungry plant?) Thing is I can't find Cal-Mag at the local stores. Only have access to Epsom salts, which I read can fix Mg defs --provided that's the issue.

    Yesterday I applied a teaspoon Epsom salts in 4 lt (1 gallon) of water. I put about 250cc of this solution into the soil --now the soil is quite moist. I also sprayed some on the leaves but dunno if it works as foliar feed. Today the plant looks pretty much the same.
    SchmoeJoe likes this.

    SchmoeJoe Well-Known Member

    Epsom is good for mag. I believe it also works as a foliar. If the plant looks the same and continues to over the next couple of days then you've fixed it. Some of the green may come back but there's likely some damage that won't go away. Watch to make sure it doesn't get worse and to see if new growth stays healthy and then you'll know that was it.

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