Get Help for Cannabis Plants Problems as Quickly as Possible!

[danielelel10]

The leaves are turning yellow/brown and wilting with one of my plants. I thought it was an N deficiency at first so I made a N/water solution and sprayed it on the plant, but it made it worse I think (maybe it just takes time, or I made the solution too strong). In the last picture you can see both my plants, other than the lower leaves the top plant looks normal, but my other plant is suffering a lot. Keep in mind that I sprayed some N on it because I'm kinda new and have never have successfully grown weed. But the problem was already present BEFORE I sprayed them, it was just a little less bad.

I have them in a 8-16 light schedule. I feed them from the basic canna nutrients in canna Coco coir. Coco A + B, cannazym, rhizotonic and now also a little canna mono (17% N). All at about half strength. The light is quite strong but I don't think that the yellow leaves are because of the light.

I would appreciate any help, thank you!

[Rwise]

danielelel10 Reads like a PH issue to me, hit the link at the top of this page "Plant Problems" and compare the pics to yours. What are you doing for PH?

[danielelel10]

I'm trying to hit 6.0 every time, but maybe I'm not quite accurate enough. I'll recalibrate my equipment and hope it resolves itself.

[Puglover1]

maybe try for 6.3-6.5?

[danielelel10]

Should I start to make my plants flower?

I don't know how long I have had them, I fucked up a little already by not keeping track of time at all. But my bigger, lankier plant is about 55 cm tall(with some bends in the main branch, and I don't know how to tell if it is bloom time. My smaller plant is barely 35 cm, but she has had some damage already so her grow might of have been stunted. They are growing under a pretty strong light with a decent spectrum. It's a hy grow at a little more than half strength now, in a 8-16 light schedule. I was thinking I should load them up to full strength nutrients for a week or 2 and them prune, flush, start switching the light schedule to make them bloom, and then flush once more before switching to bloom nutrients (using "canna boost") depending on how quickly it starts blooming.
Honestly any kind of help or tips by people with more experience than me would be greatly appreciated.

Thank you!

[SoOrbudgal]

You keep saying 8-16 which is wrong, it's suppose to be 18 on 6 off with light for veg. 12/12 on-off to start the process of flowering. Do you have any sort of fan blowing lightly around these plants? Waves of light breeze strengthens branches to hold up the bud along with the right minerals. They needed longer lighted times if 6hrs was the only light time?

[Rwise]

Need to correct the PH on the closer plant.

[danielelel10]

I'm giving them 16 on 8 off. And I have a big fan you can kinda seen it in the lighter picture, off on the right side. For the life of me, I'm giving these plants the exact same thing, but the closer smaller plant is getting worse again.

[Bowhunterwoody]

Looks like calcium def from low pH like Rwise and Puglover1 said. I'll bet your run off pH is in the low 5's. Might need to flush till the pH is back in the 6's, then keep it there like 6.4-6.5

[Rwise]

Remember, every plant is an individual.

[KronozOG]

Is it normal for the big leaf on the right to be curling down more than the others?

[Puglover1]

What strain are you growing there? The early large fans leaves can do that, they get heavy. Plant looks like it has close/tight node spacing. Don't know if strain or light distance. Color looks good, healthy. You'll probably lose those big leaves in the future, do you plan on training it? Happy pharming!

[KronozOG]

I do plan on doing LST Heres a link to where I got the seeds sketchy website but i got the seeds quick. https://www.originalseedsstore.com/o...ien-auto~21708

In the beginning the seedling was stretching because the light was too far so I moved it from 25cm above to 15cm so closer to the plant and I had to put more soil in because of the stretching about almost two inches. A day or two ago I just moved the light back up because the plant grew an inch or two and getting close to the light. I don't know if the adding soil has to do with the node spacing.

[Puglover1]

Ah, an auto. The strain sounds good!

[Lkestner]

10-14 day old auto flower showing some signs of distress (see photos)

plant symptoms

1. the original fan leaves and two others have some spots on them
2. two of the other larger leaves also have some spots and are curling down at the tips
3. the newest leaves that are coming in are closer to yellow than green.
4. the leaves that are curling down feel more dry than anything
5. plant is currently about 3.5 inches tall and 3.5 - 4 inches wide


I am growing it in a 1 gallon pot of coco coir (not transplanting)

20 hours of light 4 hours dark

Light: mars hydro TS-600. The top of the plant is about 28 inches away from the light.

temp/humidity. I have been keeping the temp at about 75 during the day and no lower than 68 at night. The humidity stays at about 40% so I had been using a plastic bottle on and off as a greenhouse to raise the humidity. I did see that doing so cause some water droplets to form on the leaves, not sure if that caused the spots on the leaves

watering with about 400 ml of 6.25 PH every 2 days or so.

Nutrients: I mixed in the recommended amount of 4-4-4 fertilizer in with the coco. I didn’t realize that I could have also mixed in the flowering fertilizer at the beginning as well so I top dressed the coco with the flowering fertilizer.

any ideas as to what is going on?

[Puglover1]

Try 6.5 pH to take up most of the ferts. Coco needs cal-mag. Good luck!

[BU2B]

• Cannabis Problems Guide
  • How to Help Yellow Seedlings
  • How to Fix Yellow Cannabis Leaves
  • How to Fix Curling and Clawing Cannabis Leaves
  • What Causes Dry or Crispy Leaves?
• Diagnose Your Sick Plant
• Bugs & Other Cannabis Pests
• How to Prevent Nutrient Deficiencies
• 7-Step Remedy That Fixes 99% of Grow Problems
• All-Natural Pesticides – Safe Up to Harvest!

I have not grown anything but hydro for some time now so before I put my foot in my mouth yet again I'm going to direct you to the above links on GWE and see what you come up with, by then you'll either have it figured out or another member who grows in your medium will have stepped in and helped to give you a more definitive answer. Happy Pharming!

[Willycox420]

Please help looking for help with my first grow. This is a red headed stranger that I actually found the seed in a bag. Has been growing nice then about a month ago the appearance of burnt tips started to appear. After some discussion with friends it was thought I had nutrient burn. I flushed the plant then proceeded to use ph neutral water for the next month. Over that month the browning seemed to move from the tips to the plant edges. There are several leafs on the bottom half of the plant with this appearance. The top half of the plant looks normal. Any help would be appreciated.

[BU2B]

It looks to me like calcium deficiency perhaps brought on by PH imbalance or maybe root issues have a look at the post above this one. Best wishes and happy pharming!

[MistaKwick]

Hello
great forum, I am growing in soil in a 1m x1m (3 feet) tent
2 congo 1 jamaica regular seeds that turned out to be females (only 1 male, which I dumped to the compost pile)
textile pots 20 liters (5 gallons)
HGL led lights
they sprouted march 31, I flipped them may 31 (11 hours light, 13 dark)
water is mineral water (I know, but I dont pay for it), ph about 7
for the last 6 weeks, leaves have started to show white and brown spots
I have no idea why
I had exactly the same in my previous grow, which turned out to be small in yield but still fantastic quality wise (different seeds, some hazes, and an indica). I thought it had to do with my soil (I have made my own mix for the last few years to great results) and nutriments, that's why this time I bought biobizz mix soil and biobizz organic nutriments which I've used in moderation (or so I think)
The Jamaican is less symptomatic than the two congos shown in the pics
I've looked online but didnt find photographs with comparable symptoms
Any idea and suggestion would be greatly welcome
Thanks

[Gingerbeard]

Y' got bugs. Get yourself a loupe and check the underside of leaves. Check buds for webs. The little black specs are poop.

[MistaKwick]

yes, I saw a creature that looked brownish grayish with 6 or 8 legs on a leaf
so I used neem oil + couple drops of black soap mixed in warm water and sprayed everything on friday (top and bottom of leaves). I watered on monday morning
Aint seen any result yet. I will spray again this week end or tomorrow wednesday.
I hope my plants recover because we were off to a great start and even with the bugs, the flowers look promising

[Bowhunterwoody]

Yep, Gingerbeard is right. Thrips, or spider mites. Get a loop and look at the bottom of the leaves.

[MistaKwick]

thank you very much,
I sprayed 1 table spoon of neem oil + couple drops of black soap in 1/2 liter of warm water, both on and under the leaves. it was thursday or friday, I watered sunday morning before leaving for a couple of days and will return home on wednesday. I hope the leaves will show some progress, but I will probably give it another spray then just to make sure.

[Gingerbeard]

I'm the one to break it to you. You might be boned. When you get into flowering, there are more things that can go wrong and fewer treatments you have.
There are different opinions in the forum that say you can apply this or that during flowering with no ill effects. Others will say not to put anything on buds. I had to get rid of a crop just a couple weeks before harvest because of WPM because there wasn't anything I could use on flowers.
What to do? Me, personally, my own recourse, what I would never suggest anyone do is start over.

[Rwise]

Never use Neem oil on buds, it has harmed many folks. In veg OK, on the soil OK

[MistaKwick]

Status report: unfortunately, the bugs are still on the leaves and are still very much active
Will spray again and hope for the best
If neem oil fails, whats the next level product that wont harm or "pollute" the flowers (which are still fattening nicely, and which I try not to spray, of course)?
Thanks in advance