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
- 7 replies
- 1.6k views
about 2/3 through veg theres like 2 or 3 tiny flies hiding under leaves chewing them making holes in them, making rust dots and black dots, and making long yellow rips in leaves.. this is all in its very early stages.. wondering if someone could tell me what insect ive got and how to get them ooout! ?! help appreciated guys.
Last reply by cray-zay-one, -
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High all, I have mold growing on the top of my potting mix and rockwoll on one of my clones , a prob i've never had before so any reccomendations would be great. I've seperated it from the others at the moment and scraped off what i could, considering just throwing it away but its so healthy.
Last reply by moKing, -
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- 420 Crew
- 4 replies
- 1.2k views
Noticed a couple of tiny grean bugs in my growroom. I have looked through shitloads of threads and have only come across on comment about thes 'green' fly things but there was no solution. I think neem oil was mentioned? Does anybody know what these little bus are? They are about 2mm long, sort of tapered (like a moth with wings folded) and are noly noticed when you brush your plants with your hands. This causes them to fly around a bit... Worse though is that I am noticing small marks appearing on some of the leaves, like tiny little dead patches. I cant provide any pics cause the camera is a bit of a budget model... Cheers for your help
Last reply by thc24, -
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- 420 Crew
- 11 replies
- 2.1k views
I just wanted to ask what you guys use to control or manage or eradicate the borg down your neck of the woods? I mean,total grow room sterility is nice but can only be done with a complete shutdown of your grow but most of us have if not rolling production methods at least plants coming in which stop us from doing a total sterilisation of your grow which means invariably coping with the borg,so I wonder how you guys do it?
Last reply by thc24, -
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- 420 Crew
- 14 replies
- 7.1k views
hi all i have a case of whitefly. probably worse ive ever seen it. when i move the buds the little suckers fly all over the shop. i dont see any spots or other negative signs on the leaves though. im 2 to 3 weeks max from chopping em down. should i spray to kill the whitefly or let em be? im inclined to let em be, because last time i had mild whitefly i sprayed em 4 weeks into flower with half strength maveric and it browned some of the pistils. if i should spray them, what do u recommend which would be non-toxic? i dont want to be spraying maveric 2 weeks before the chop. i was thinking pyrethum or neem? what works on whitefly. i have no idea ho…
Last reply by eternity, -
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- 5 replies
- 950 views
http://www.gro-lite.co.uk/pythium.htm this is a good one to read a must for all newbe growers tt
Last reply by Closet Grower, -
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- 420 Crew
- 7 replies
- 1.2k views
Hey everybody, does anyone have a link to pictures of bugs/insects that are a common problem. i was checking my reservoir this arvo and found a little silver insect in there it was about 2mm long shaped like a teardrop with legs and a tiny tail.. any help appreciated.. Cheers wayno..
Last reply by Dave The Nefarious, -
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- 420 Crew
- 16 replies
- 2.3k views
How do I get rid of these little buggers and their larvae in the soil ? Will they hurt the plant at all ?
Last reply by Closet Grower, -
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- 3 replies
- 889 views
Has anyone ever used this on their MJ plants? If so did it work well or was there any problems as a result of using it? If noone has used it does anyone think it'll hurt my plants? http://www.scottsadplanners.com/CategoryFiles/5_Ortho%C3%82%C2%AE/132_Disease%20Control/temp/235511OrthenexGardenPint06.jpg
Last reply by pipeman, -
- 11 replies
- 4.2k views
Hi Im in a bit of a desperate spot guys , I have 10 young plants 2-3 wks from clone box and they have Pythium , they are an important strain to me and I really need to try and save them . This is were Im at right now , I have Fongarid ( 2g satchel ) mixed in 100ltr tank and I am also using Oxy Plus 1 cap in 100ltr everyday and a very weak nutrient 10cf in a return to tank system , I feed by hand while they have this sickness . The medium is perlite and I am trying to keep it as dry as I can without the plants dehydrating , to achieve this I watch them closely through the day and if they start to wilt in the slightest I give them about 100ml of the fongarid oxypl…
Last reply by BentBuddha, -
- 2 replies
- 1.2k views
hi just discovered small amount of whitefly what should i use to treat them effectively? i have maverik? can i use that as a foliar spray for white fly? maybe at half strength? or is there something else more common/popular/effective also do they do much damage? ive got them in 1 crop which is finishing in a week so im thinking of just leaving them be ive also seen a couple flying around some other plants which are vegging so id like to treat them now before they go into flower in a couple of weeks ive never had them before! dont know where the buggers came from. thanks
Last reply by Rhizo, -
hey all, have got root rot in 3 of 5 buckets.... i plan on lowering the level of the water and add some rhizotonic.. im a little confused on the dosage rates.. tha bottle says 2ml per 5 litre of nutes... i am planning on using the rhizo continuosly and have beeen told that 2ml is too much.. anyone use this style of rhizotonic... all help is greately appreciated take care and peace out
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- 420 Crew
- 10 replies
- 1.4k views
Looking for some advice as to how to deal with plants showing severe signs of what has been diagnosed as Sulpur and /or Magnesium deficiency on new growth. The symptoms are due to imobile nutrients or secondary nute lockout (Mg,Ca,Su,Fe). The damage was caused over the last two weeks while trialing a new microbial/root repair product which has not been released (what a fuck up!). The product was first applied 1 week before going 12/12. It was used for two weeks. After the symptoms became too severe (at the end of the first week of 12/12), the system (rockwool) was flushed with plain ph'd water for 2 days, then the tank was dumped again and has been run on A+B bloom nu…
Last reply by keepleft, -
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- 420 Crew
- 28 replies
- 3.8k views
Am i the only person in australia with invincible scarid fly? ive researched for hours on ways to kill them and ive tried EVERYthing on them. microbial is useless ive bought litres and litres of this shit but no luck. ive tried watering it several ways, like hand feed and drip feed at diff dose rate with np luck, ive even tried daily misting of the top of the media with straight microbial. i read on ostoners from luke that success drench works but after 2 drenches a week apart at 5 ml per litre that didnt work. ive tried a layer of clay balls on top also tried a layer of perlite with no luck. cutting back on feeds mesh on inlet fans sticky fly traps (dozens) under…
Last reply by keepleft, -
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- 420 Crew
- 25 replies
- 3.6k views
The lowest leaves on my plants are turning yellow, what does this mean?. Is it lack of Nutes?. I didn't add any nutes untill the 3rd week. I'm using Thrive at half strenth. Gave it a dose 6 days ago again just now. I hope I'm not over feeding them?. They're watered every 36-48 hours. About 100-150ml.
Last reply by New Holland, -
