Results 1 to 10 of 10
Like Tree3Likes
  • 1 Post By Caregivers
  • 1 Post By Snub Knows
  • 1 Post By sunnyside58

Thread: The cause of purple stems

  1. #1
    New Member
    Join Date
    Sep 2011
    Posts
    4

    Question The cause of purple stems

    Just that, what cause's the stems to turn purple. Growing sour d. Is it just a colder temp the plant is not use to, or can it just be any type of stress? like spraying azamax at to high of a dose? thanks and lots more ? to come

  2. #2
    420 Member NCDude's Avatar
    Join Date
    Jun 2010
    Posts
    443

    Re: the cause of purple stems

    Thanks for posting

  3. #3
    420 Member
    Join Date
    Jan 2011
    Posts
    1,193

    Re: the cause of purple stems

    Some people say it is stress. I have a strain (G13 / Haze) that shows purple stems at all times. Veg, clone flower all phases you can find a purple or red stem. My last harvest was great so I dont think they were stressed the whole time.

  4. #4
    420 Member SourSkunkD's Avatar
    Join Date
    Jun 2011
    Location
    continental us
    Posts
    274

    Re: the cause of purple stems

    i had a feeling this may have been the reason my my clone to hermi half way threw flower.(too much heat)
    WINNING!!!!! :

  5. #5
    New Member
    Join Date
    Aug 2011
    Posts
    8

    Re: The cause of purple stems

    Everything I've heard it has to due with temp in more cases. If you surround the stem in ice daily in the last few weeks of growth your stems and even some bud will turn purple. I have not experienced this myself but I have been told this by grower friends I have.
    Nature's way of saying High!

  6. #6
    420 Member
    Join Date
    May 2010
    Location
    Montana
    Posts
    132

    Re: The cause of purple stems

    Most of the time it is just the strain that has purple stems or colder environment temps. There is one other reason that can cause purple stem and that is the lack of cal-mag. It won't cause all the stems to turn purple, just the new growth. Best way to tell would be to look at the leaves on the outside and look for yellowing that turns brown. This would mean your plant needs more cal-mag. Just my 2 cents....

    CGs

  7. #7
    420 Member Snub Knows's Avatar
    Join Date
    Aug 2011
    Location
    Nor Cal
    Posts
    89

    Re: The cause of purple stems

    Quote Originally Posted by Caregivers View Post
    Most of the time it is just the strain that has purple stems or colder environment temps. There is one other reason that can cause purple stem and that is the lack of cal-mag. It won't cause all the stems to turn purple, just the new growth. Best way to tell would be to look at the leaves on the outside and look for yellowing that turns brown. This would mean your plant needs more cal-mag. Just my 2 cents....

    CGs
    Could be phosphorus if it starts low.
    Could really be anything though. Heat, cold, stress, genetics, nute deficiency of some sort (many possible). Could be toxic in one thing, which in turn locks out something else. Need more info.
    I'm currently harvesting about 30 sour diesel, seems like the taller pheno was much more finicky for me. I think i had too much calcium between my tap water and the CaMg+ I use in my coco grow. The taller ones have a pretty bad lockout as a result. Something immobile, as its up high, but doesnt look like mag. Looks more like a sulphur def.
    Anyway, all the tall sours had purple petioles.
    "An ounce of prevention is worth a pound of cured, lol..." - Benjamin "Buds" Franklin, weighing in on prevention

  8. #8
    New Member
    Join Date
    Aug 2011
    Posts
    14

    Re: The cause of purple stems

    I read that only females have red stems and that is an early detection method for females and males if the phenotype has the characteristics but it could also be hog wash

  9. #9
    New Member
    Join Date
    Sep 2011
    Posts
    4

    Re: The cause of purple stems

    Quote Originally Posted by Snub Knows View Post
    Could be phosphorus if it starts low.
    Could really be anything though. Heat, cold, stress, genetics, nute deficiency of some sort (many possible). Could be toxic in one thing, which in turn locks out something else. Need more info.
    I'm currently harvesting about 30 sour diesel, seems like the taller pheno was much more finicky for me. I think i had too much calcium between my tap water and the CaMg+ I use in my coco grow. The taller ones have a pretty bad lockout as a result. Something immobile, as its up high, but doesnt look like mag. Looks more like a sulphur def.
    Anyway, all the tall sours had purple petioles.
    Thanks man! hasn't got to cold in my room so thats why I got a little worried. Like I said I just used azamax so hopefully that was just it. No more spider mites tho. My bigger babies showed less sign of it compared to my smaller ones. been a couple days and the bigger ones look like the purple is stoping, or receded on some, new growth looks good but ill see shortly. Thanks again

  10. #10
    420 Member
    Join Date
    Apr 2012
    Location
    O'ahu, Hawaii
    Posts
    276

    Re: The cause of purple stems

    Aloha,
    I had the same thing going on with a few of my plants and read and asked other growers and all read and what was posted was a nute deficuentcy. Coukd be , Boron, iron, calcium. Or so many others I just gave it pro-cal 3 times a week apart and they got better but some bravches stayed red. Most said could be genetics or the strain. As long as your plants are healthy, I stopped worring about it. To many "could be deficiencies". I am just going on with the same schedule and keeping it green. Sorry I could not pin point the problem but I am with you. These plants developed about 1/3 purple stems and it was alright. Just keep on a feed schedule, a regular one. Don't jump all around. If it is every 2 weeks keep it at every 2 week. Hope this helped. Better to spray azomax once a week lightly for a month than to go heavy once. Aloha and GL
    JohnnyT likes this.