What's new
  • As of today ICMag has his own Discord server. In this Discord server you can chat, talk with eachother, listen to music, share stories and pictures...and much more. Join now and let's grow together! Join ICMag Discord here! More details in this thread here: here.

Cannabis health: brown/yellow tips and white dots in yellow leaves

biofranz

New member
Hello,

First of all, I don't know if this is the right spot to ask these kind of questions, if it isn't I'm sorry. I'm new around here. So if I posted this in the wrong place, I will be thankful if some administrator can move it to the appropriate location. I posted here because this post treats auto-flowering cannabis
although it is not specifically about that.
Second, this is my first grow so I'm kind of a beginner in matters of growing and I also started with little resources so maybe my plants unfortunately may seem I little bit mistreated.

Plants: one White Label Skunk Automatic Fem and one Sweet Seeds + Speed Fem
Subtract: Cannabiogen Auto Mix
Pot: two 11 liters pots (2.90 gallons)
Stage: They are currently in the beginning of flowering phase with some buds formed.
Lights: 2x 36W 2700 k and 2x 45W 6700 k (with two small 2700 k, with just a few watts supporting in some of the shadowed areas)
Light schedule: In the two first weeks of vegetative growth I was doing 18/6, then my timer broke down and I had to make it 24/0. At the beginning of flowering stage (about two weeks ago) I got another timer and currently the light schedule is back to 18/6.
Nutrients: No nutrients during vegetative stage but then I've noticed some yellow leaves in the bottom of my Speed plant and I got Bio Bloom (NPK: 2.0 - 7 - 4) which I'm currently using (3mL per liter) in booth plants.
(I know yellow leaves are a symptom of nitrogen deficiency and that they're expected to appear during flowering stage but I thought they were appearing too soon and given the small size of my plants I decided to get some nutrients. I also heard some growers saying that Nitrogen must be avoided during flowering stage but I believe the NPK 2.0 - 7 - 4 mustn't represent any harm to my plants, well, I hope.)
Ventilation: Very bad. I got a 12V PC fan yesterday, a bit late I know.

Notes: I also had some bugs in my plants. I got a bit worried
at the beginning but they don't made any big damage. I catched some of them and they seemed not be a cannabis pest. I also got some tiny yellow/brown tips during vegetative stage - they seemed to be a result of heat or nutrient damage, my plants still have some.

My current problem:

These are photos of my Skunk Automatic.


This leaves have some white dots over them (the right photo is an amplification). And it's a bit yellower than the others. The bigger lower leaves seem like this.


This is near the shoot apical merystem. Is it nutrient burn? Should I remove the damaged part or it's useless to do so?

Well, it's a quite long post but if someone could help me it would be great. I'm Portuguese and I will not be sorry about my English but I really hope I've made it clear.

(One good photo of my little Skunk)


 

Attachments

  • 20150503_222917.jpg
    20150503_222917.jpg
    51.6 KB · Views: 20

SmokeyTheBear

Pot Farmer
ICMag Donor
Veteran
Spider mites and nutrient lock up. Have to figure out what caused that. If they're flowering then it's too late to cure the spider mites. Unless you don't care about using pesticides on things you're going to ingest.
 

biofranz

New member
Thank you very much for your answer.

I've just inspected the abaxial surface of my leaf and unfortunately you are right.
There isn't really nothing to do? I don't see other leaves infected and there's no sign of any web, is it possible to combat the infestation without the use of any prejudicial chemicals? Like cutting the infected parts or something? I've heard about grower fighting spider mites with bleach and water and alcohol and water solutions, do you think is it possible? This without pollute too much the integrity of the plant and the buds' quality?

The spider mites came from outside for sure. It's highly improbable that they came from another grow.

Sorry for the massive number of questions and I'm really thankful for your answer, during vegetative stage I thought I had spider mites (because of the bugs I have in my grow) and I searched on them so I feel quite stupid now for not having noted this symptoms.
 

SmokeyTheBear

Pot Farmer
ICMag Donor
Veteran
They're not too far along. I guess you could spray them with pesticide if you really need this plant. Personally, I think Seven works the best for spider mites. I've also used Bug Buster. Trust me, if one leaf is infected with spider mites....the whole plant is.
 

SoufLondon

Active member
Iv grown that white label skunk auto. The pheno you have is the indica one and is a bit weak. I threw mine away after a cure cos the taste was really not for me. There is however a sativa pheno to be found in the same stock which KICKS ass. Please pop more white label skunks, you will find an amazing plant in there i promise, i found about 30% of them are the awesome sativa pheno. Very tall, very very strong for an auto. Good luck!
 

Latest posts

Latest posts

Top