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Taco leaf causes - not humidity or temp or ph

Discussion in 'Marijuana Plant Problems' started by eversons, Nov 13, 2017.

  1.  
    eversons

    eversons Member

    I've got a couple of plants where the leaves on top are suddenly tacoing. Everything I can find by searching talks about heat stress, low humidity, or ph. My temps have been consistent, always in the 60s at night and 70s during the day and humidity is always between 40 and 60. ph is always 6.4 to 6.6 going in. I'm in soil.
    I did notice that the plants seem to be taking in less water than normal as I've been having to water every other day and it's now been 2 days since last watering and the soil is still moist.

    So what other reasons are there for leaves to taco?
    Anything that might also cause plants to stop drinking as much water?
     
    Jypsy Dog and chemphlegm like this.
  2.  
    chemphlegm

    chemphlegm Well-Known Member

    you have possibly overfed your plants, locked them up, slowed up take and curled their leaves, soon to burn, and crisp early.sorry
     
    Chunky Stool and Jypsy Dog like this.
  3.  
    Jypsy Dog

    Jypsy Dog Well-Known Member

    2 Plants same problem? Could be too much water or too much love.
     
    Chunky Stool and natureboygrower like this.
  4.  
    Diabolical666

    Diabolical666 Well-Known Member

    Yep..killing it with love
     
    Chunky Stool and natureboygrower like this.
  5.  
    natureboygrower

    natureboygrower Well-Known Member

    im having something similiar going on.are they rolling down or up?mine are rolling down
     
  6.  
    Diabolical666

    Diabolical666 Well-Known Member

    Whats the lighting like, rootbound? Sufficiant airflow? How often and how much you watering?
     
    natureboygrower likes this.
  7.  
    natureboygrower

    natureboygrower Well-Known Member

    i was personally thinking rootbound myself.i went from 2 gallon to 3gallons weeks before 12/12.im in airpots,barely got any additional soil when i transplanted into the 3gallons.im between 70-80°,humidity 45-55,plenty of airflow,water every 3-4 days,only half gallon at a time.both plants showing this are gojis,two cocoons show no signs.im in a small space,200w of cobs.my rolling is down low,so i dont think its light bleaching or poisoning.(not sure if your question was directed at me,but maybe this will be helpful to op)ty
     
  8.  
    Diabolical666

    Diabolical666 Well-Known Member

    Pics
     
  9.  
    natureboygrower

    natureboygrower Well-Known Member

    its very sporadic and affected just a few leaves here and there .ive checked over and over for bugs,nothing.the only other thing is i have a humidifier on that side of the cab. 20171113_191315.jpg
     
  10.  
    Lacedwitgame

    Lacedwitgame Well-Known Member

    Run it under a scope to clear possibility of russets
     
    natureboygrower likes this.
  11.  
    natureboygrower

    natureboygrower Well-Known Member

    i definitely have many times with a 100x loupe.
     
  12.  
    Diabolical666

    Diabolical666 Well-Known Member

    Id pull the dehumid, you get enough rh when you water. run dry as I can, the plants will adapt fine, and if you get powder mold it sux. Check your roots, make sure everything is normal there
     
    natureboygrower likes this.
  13.  
    eversons

    eversons Member

    This is what I'm leaning towards, just because nothing in the environment has changed. Or maybe they are getting rootbound.
    I gradually switched from Jack's All Purpose(20-20-20) to Jack's Blossom Booster(10-30-20 in the past couple weeks. I've been using CalMag and feeding with every watering. Tap is 80ppm, I add about 120ppm CalMag Plus, then 300 to 400ppm of Jack's, so about 500ppm to 600ppm total. (all on the 0.5 scale) I thought that seemed like a pretty moderate amount for every feeding.

    I'm in 3 gallon pots of generic organic potting mix and 30% perlite.
    Plants vegged for about a month and are now in 7th week since switching to 12/12.
    I water every other day, about 1/2 gallon per plant, which provides decent runoff.

    Leaves are curling up, not down. It's on 3 of my 9 plants. I'm not too concerned because it's only a few upper leaves. But I'd like to do whatever I can to keep these girls as healthy as possible until they are ready to harvest.
     
  14.  
    chemphlegm

    chemphlegm Well-Known Member

    I dont buy the root bound theory. I've vegged moms for years in a 2.5 gallon container and then flowered them in the same and never an issue. they need more water in a smaller container but trees can grow in cups too.
    I think @ RIU
    Root Bound = I'm not able to supply plant needs in a timely manner

    remove the leaves that are not healthy. water when dry only. skip the cal mag once in awhile eh, you're in dirt.
     
  15.  
    eversons

    eversons Member

    The taco'ed leaves are still green and look healthy otherwise, so I think they can recover.
    I had a mild case of brown spots during veg and a more severe one early in flower and the general consensus was a Cal def, so I've been trying to avoid that. It's true that I'm in dirt, but it doesn't have any lime in it and my tap water has very little cal or mag.

    The interesting thing is that my 3 Sativa dom plants did not get the taco'ing and they seem to be the most sensitive of all my plants. The difference is they got a flush last week because they were looking overfed with dark green shiny sugar leaves.

    So I think I'm going to give all the plants plain water today (assuming they are needing watered) and see how they react in the next couple days. I'm getting close to when I need to start doing a pre-harvest flush. Lots of pistils turning brown, but trichs are still clear.
     
  16.  
    Jypsy Dog

    Jypsy Dog Well-Known Member

    Not much need for Cal/ Mag with tap water, or in flower. Let's see the buds.
     
  17.  
    eversons

    eversons Member

    Like I said, my tap water has very little Cal or Mag and my nutes have none and I didn't add lime to my soil.
    I'll put up some pics shortly.
     
  18.  
    eversons

    eversons Member

    Here are a few pics.
    Note that the brown patches on leaves are all from about 6 weeks ago. That affected the Pineapple Haze the worst with less severe spotting on the Blueberry and Strawberry Kush. All of it mainly affected upper leaves exposed to light. But it wasn't a heat issue and that issue was resolved with a flush, lowering nutes, and bumping up CalMag. None of it has gotten any worse since then.

    Also note that the brown tips on most leaves happened around the same time as the brown spots, about 6 weeks ago. That also hasn't changed or gotten any worse since then.

    The taco leaves are new. Seemed to happen overnight after a feeding about 5 days ago and seems to have only affected the Strawberry Kush and Blueberry. The plants were pretty dry this morning, so I did a plain no-nute watering at 6.6 ph with a pretty good amount of runoff. If it's an overfeeding issue, hopefully they will look better in the next day or two.

    I checked trichs again this morning. Still looking crystal clear. I'm at 7.5 weeks since switching to 12/12 and the Strawberry Kush is supposed to be an 8-9 week flower time, so it should be getting close, but definitely not ready yet. Blueberry is supposed to be 9-10 weeks and Pineapple Haze is supposed to be 10-12 weeks.

    All.JPG


    Strawberry Kush

    SK1.JPG

    Strawberry Kush

    SK2.JPG


    Strawberry Kush

    SK3.JPG


    Blueberry

    BB1.JPG


    Blueberry

    BB2.JPG


    Blueberry

    BB3.JPG


    Pineapple Haze
    PH1.JPG


    Pineapple Haze

    PH2.JPG
     
  19.  
    eversons

    eversons Member

    No change since the plain watering on Tuesday.
     

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