Pests and Diseases
HELP! Whats wrong with my Plant?
To assist the cannabis community in providing you with an accurate diagnosis, help and advice please answer as many of the the questions below as possible including a description of the problem/s and how long the cannabis plant has been suffering along with any good clear photos when available.
Indoor/Outdoor:
Growing Medium:
Growing Style:
Watering/Feeding Frequency:
Nutrient Strength (PPM/EC):
PH Levels:
Temperature/Humidity Levels:
Air Flow/Fans etc.:
Lighting Type (CFL/HPS/MH etc.):
Total Wattage:
Growth Stage:
Plants Age:
Cannabis Strain:
537 topics in this forum
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- 420 Crew
- 14 replies
- 2.6k views
guys i have an infestation of fungus knats (along with pythium ) in 2 of 3 G-rooms. all the roots were brown and slimy. the leaves were dying (yellow, brown, brittle). i have been flushing the grodan slabs (in crop boxes) with 5ml per liter of microbial and also adding 2ml per litre of microbial to the nutrient solution for the past 2 weeks. i have also sprayed the underside of the plants where the scarid fly have been observed - firstly with a lot of confidor, then 3 days later with with mortein house and garden. after 2 weeks if you look under the crop boxes there are some very thick, white and healthy roots sticking out amongs the dead roots. also there is…
Last reply by sydneyguy, -
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I have some white russian growing right now and they were all going great up until now....The lower leave's stems are starting to just give out and at some points in the stem its hollow like. On all of the plants, the main stem has a split that goes right down the middle of it. Around the split its starting to turn a a dark brownish color. Also some of the lower leaves are just drying up and I've given them enough water. I have no clue whats going on and the split down the stem is really bad to the point where you can see right through to the other side. Any one know what the problem is? I was thinking root rot.....but I have no clue what it really could be. I posted the …
Last reply by *weedman*, -
- 3 replies
- 991 views
Hi Ive had a Pytium problem hound me every summer for a number of years , I tried everything and it alway came back , I think when you have a source and its giving you problems the recomended doses of pythoff and co will help wilth keeping it out of a system and not let bloom but will not eradicate it and the end result is the yields are always not what they should be , you can have this prick of a pest and not really know , it comes in forms from being serious where clones fall over dead or very mild where large plants just dont have the root system working at full potensial to give maxium yield , its like having a touch of the flu and trying to run a marathon , you …
Last reply by Buddy, -
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- 420 Crew
- 9 replies
- 1.2k views
This ought to clear up the picture to what's really happening with your plants!! The problem with this plant is it has been burnt from to much heat from the lights
Last reply by WantDaChronic, -
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- 420 Crew
- 6 replies
- 985 views
ok im about to leave state so i dont have long to type im doing a soil grow its under 2 compact floros about 5 weeks old leafs are curling no nuits right now to worry about but that might be the problem they are all curling under aobur 3 days after they come out of the dirt part of the problem might be there pot which is a very old fire extinguisher made of copper gotta run any help would be appreashiated but i wont be able to check up on this for a while later and have fun with your bud where im going is dry :thumbdown
Last reply by fsagertyaef, -
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- 420 Crew
- 7 replies
- 1.4k views
my digicam is fukd, so ill describe it as best i can. ive got 12 plants in a 1.2mx1.2mx2m grow box, 2x 600w hps, 200mm centrifugal fan 4 exaust and 2x desk fans inside.its very well ventillated and stays under 30c. im growing in cana coco, 10L pots.and im hand watering them, they are 4 weeks into flowering and approx 800-900mm tall, white rhino.ive been growing like this for a long time and ive never had this kind of problem, i would appreciate anybodys help. It started about 1 week ago, now 3 of my plants are almost dead, and a few more arnt looking real good... There dont seem to be any visible bugs on the plant, but if I stir up the coco with my hands theres a al…
Last reply by croweater, -
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- 420 Crew
- 3 replies
- 781 views
can anyone identify this problem? it looks like its just on te top leaves ... seen it getting worse for a few days could be too much water .. too little nutes .. too little light (just replace dthe 3 growbrites with a SonT 400HPS) this kinda thing has never happened in the aero.. so it must be a variable specific to medium - the plants are sitting in a clayblaa/perlite/vermiculite mix and get hand watered and nuted ? thats all i can think of as background any ideas appreciated
Last reply by WantDaChronic, -
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- 0 replies
- 661 views
on the outer side of the leaf i am seeing a white/ slightly yellow mark. could this be due to me spilling some ph down substance on the leaf and then the cfl damaging the leaf in this way. is this possible. hope someone can tell me
Last reply by fuze, -
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- 420 Crew
- 22 replies
- 2.4k views
something has been eating my plant i busted two snails and one slug an there is about 30-40 mites all green,white,brown in colour i killed the snails and slugs but how do i kill the mites? without any toxics going into the plant i think there could be another slug somewhere it keeps on eating the leaf's ive never had these problems before only harmless white flys :thumbdown
Last reply by Gazza2001au, -
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Weaver Ants
by F420-
- 420 Crew
- 7 replies
- 1.6k views
Hey there, Can anyone tell me how to get rid of weaver ants, The place ive just rented is full of them. I asked the oweer about pest control and he claims that they are the pest control. however I dont want these nasty things around. Are there any weaver ant predators?? weaver ants also known as green tree ants.
Last reply by F420, -
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Hi Stonerz I noticed a slighly manky .. kinda rotting smell in one of my tubs today .... no big surprise to find two of 5 nets had some of their roots turned a little brownie .... the temp in the nute rez was 26 .. somehow ... anyway, looks like there is a little rot already and I was wondering if anyone knows how to treat them ... I'm growing Aero so the roots are hangin in the air and acumulating at the bottom of my top tub ... Chato ... where are you dude? I know I was warned .... no idea how the temp button got turned up ... sheeee IT this is how they looked on Sept 4th http://cannabis.community.forums.ozstoners...pe=post&id=8438 thi s is what the roots …
Last reply by Mushaman, -
- 4 replies
- 883 views
(newbie question) shy.gif from what I've read .. most/many pests come from using organic mediums or at least they like it a lot ... as opposed to non organic mediums which they dont like and there's plenty of options.... so, why doesnt everyone grow in non organic mediums and avoid a lot of the pest probs ? does the finsished bud tate/smell/smoke/stone better?
Last reply by Mushaman, -
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- 420 Crew
- 8 replies
- 1.2k views
How do I protect my girls? I am growing outside and I have alreay lost 3 of my girls to some native munching bastard.......????????? :scratchin Need an idea that is not to sightly. :scratchin This is no bug or grub, it is a native fluffy bastard......eats them off just above the ground and leaves them to die....very pissed off moment
Last reply by Hanky, -
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can you identify this bug
by Guest jjfto- 2 replies
- 729 views
can you identify this bug
Last reply by Pickle, -
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- 420 Crew
- 9 replies
- 1.4k views
I have hundreds/thousands of little yellow spots all over most of my leaves - does anyone know what this may be?
Last reply by Tom, -