Cannabis Troubleshooting
Information and discussions on cannabis diseases, pests and nutrient problems.
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- 420 Crew
- 3 replies
- 7.9k views
NITROGEN (N) Pale plants, red stems, smaller growth. Rapid yellowing of lower leaves progressing up the plant. Add any chemical fertilizer containing N. Treated plants recover in about a week. PHOSPHORUS (P) Slow or stunted growth, red stems. Smaller leaves that are dark green. Lower leaves yellow and die. Add chemical fertilizer containing P. Affected leaves will not show recovery but new growth will apear normal. POTASSIUM (K) Affected plants are usually tallest and appear to be most vigorous. Necrotic spots form on lower leaves. Red stems. Leaves appear pale or yellow. Add chemical fertilizer containing K. CALCIUM (Ca) Lack of calcium in the soil results …
Last reply by Matt_FTW, -
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- 5 replies
- 455 views
Hi All, The other day I noticed one of the indica plants with a weird colour on one leaf. It hasn't gone away - yet hasn't spread - my thoughts at the moment are that it got a little water on it and its burnt it under the light. Or could it be from the perlite around the base of the little guy? Or is it showing me that it needs something else? Thanks in advance for any advice!!
Last reply by Razz0r, -
- 7 replies
- 991 views
Hi all..this is my first post and my first grow, it is just a small indoor grow under led grow lights,i spent a bit more money and bought good quality lights and good quality soil mixed with perlite and coco husk,the problem is the plants seem to be growing slow and some leaves are turning yellow,i have been watering with nothing but fishtank water every 3-4 days but i have used a little worm poo liquid fertilizer. i have put a photo of a couple of leaves if anyone can shed some light on what im doing wrong, it would be greatly appreciated.thanks Mark..
Last reply by The Stoned Jester, -
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Indoor/Outdoor: Indoor, just moved outdoor today though Growing Medium: Soil (Potting mix with slow release ferts and added perlite and vermiculite) Growing style: Hand Watered Watering/Feeding Frequency: Water 2-3 times a week with rain water from a tank, feed once a week Nutrient Strength: Thrive Soluble Plant Food (NPK: 25,5,8.8) and Seasol, applied as directed Ph levels: 6.5 (however my ph meter is quite cheap and not digital so could be incorrect) Temperature/Humidity: N/A Air flow/Fans: None, just moved outdoor today though so well ventilated now Lighting type: CFL Wattage: 80W Growth stage: Veg Plant age: 3-4 weeks from seed Strain: White widow X Big bud Do my pla…
Last reply by The Stoned Jester, -
- 9 replies
- 717 views
High all My leaves are going yellow , and one of them is brittle at the end It's a 20lt bucket 670 us/cm that's what my meter reads not to sure how to convert yet Ph 6.8 And are using the general hydroponic three pack and using 5ml of each http://images.tapatalk-cdn.com/15/04/26/f4d07b106e7fd166a71ad7326126ffde.jpghttp://images.tapatalk-cdn.com/15/04/26/1ee42e0d2b762996291e48d3be0892ad.jpg
Last reply by Bobb11, -
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- 420 Crew
- 8 replies
- 3.5k views
Looking for some advice please... My THC Bomb has succumbed to bud rot. It appears that the chronic white fly infestation, combined with massive, dense buds and cooler night time temps of late [plenty of nights under 10 degrees] has created ideal conditions for bud rot. I have harvested it today as we are just about to get 3 days of wet, cool weather. My question is will the rot spread now that I've harvested or does harvesting stop the spread? Do I need to go through the whole plant tonight to find the rot or can it wait for a bit?
Last reply by asterisk, -
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- 4 replies
- 999 views
Hi all, have been browsing for a while, first time grower and first time poster! I have just purchased some nutes this week for my plants and I decided to go with Canna Terra Vega, I read all over the net its NPK was 3-1-4, However when mine arrived it says 3-0-3-0... This has me confused, I will post a pic of my label, can anyone shed some light? Thanks
Last reply by BudNewb, -
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Wondering if anyone has ever had cannabis plants in flower when plague locusts have come through their area? Wondering how much damage they do, and if they eat everything, or just the shade leaves and leave the buds alone? We have plague locusts in the region, but not at my local area, yet. But the numbers of the small hoppers in my grow area are on the increase, and we are a chance of getting hit by the swarm. Plants are all well in flower, between 2 and 5 weeks off harvest. It's too late to spray with eco neem, and wouldn't want to spray anything on the buds at this stage anyway. Being a guerilla grow, it's probably not realistic to use some form of physical pro…
Last reply by Sir PsychoHashy, -
- 7 replies
- 898 views
Outdoors 8 weeks flowering 30 degrees temp Water 4 times a week Any ideas what this is, its munching on my plant What is best to use to get rid of them? Any help would be frigging awesome Happy Budda
Last reply by MrCompletion, -
- 6 replies
- 703 views
Hi guys need some urgent help what is wrong with this plant. Plant was very healthy then over the last two weeks have noticed alot of things happening to the leaves. Here are some pics. The leaves are all sort of limp now... Any help appreciated. I have just swapped from a veg fertilizer to a flowering one by yates.
Last reply by MrCompletion, -
- 4 replies
- 846 views
Growing in potting mix/composted cow manure/perlite 430ml pot Outdoors sun in VERY tropical heat (pot wrapped in cardboard ‘blanket’ during the day for some insulation) 27 days into flower (cloned mid October – had a setback when younger but bounced back well) This girl had been going gang busters (well at my level anyways!!) until only the weekend when she started to rapidly show signs of leaf yellowing lower down – didn’t worry too much until a few days ago when suddenly the whole plant is yellowing fast, and leafs are limp, droopy & lifeless. I did have an issue with the top of one cola developing what I presumed to be ‘bud rot’ mid last week, but I chopped that …
Last reply by amlez, -
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Hello today I went down and noticed my Lemon haze is starting to dis color and become blotchy can anyone tell me what this is and how to fix it ?
Last reply by merl1n, -
- 10 replies
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Two of these bad boys here are unknown seeds. They've been on 18/6 as there are two smaller plants in the tent also, however I want them to catch up so haven't put any plants into flowering. However a few days ago, one of the plants, the top of it, the leaves became dark green, hard/rough and slightly discoloured curled edges? Also, on BOTH plants, where bud should be when they flower it has gone all light green and looks like there are female pre flowers? BUt how could that happen on 18/6 Please assist.
Last reply by DiamondSour27, -
- 6 replies
- 4.1k views
Hey all. Found some, what look like eggs on the underside of one fan leaf? Removed the leaf and had a good look over the plant, no strange bugs hanging around. Any idea what they are, what they're from and should I be concerned? Thanks in advance.
Last reply by MediKat, -
- 10 replies
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About 2-3 wks ago my SSS bubblefuck got really curled up leaves & flowers. It has been in flower for about 5 weeks now. I was treating it as heat stress and have been giving her just tank water. She looks like this now. Her sister is nearby, she went into flower after her & looks like this Grown outside in the ground & she was only given seasol & power feed before this happened. I don't know what to do & have been googling & don't even know if I've diagnosed right. The new growth seems ok but the rest is just not happening. Is there anything I can do to help her? Thanks
Last reply by Frank Reynolds,