I’m new here and desperately looking for help. I’ve done a lot of research and talked to several people, but I haven’t found a solution yet.
I’m having the same problem with my mother plants and the clones I took from them.
My mother plants are almost 4 months old in veg stage. Strain: Glue #31 compound genetics.
30 days ago, they started to show burns on the tips of the upper leaves. These burns spread throughout the leaf until they kill the entire leaf.
The new leaves grow smaller and smaller until the problem takes over the entire plant and it dies (I’ve already lost 5 plants in the same way).
I uploaded some photos so you can better assess the situation.
Does anyone have any idea what’s attacking my plants?
Watering and Grow Room Information
Sealed room
Coconut fiber soil
2 gallon pots
Strain: Glue #31 Compound Genetics
Input EC 1.4 / Output EC 1.8-2.2
Input pH 6.0 / Output pH 5.9-6.5
Runoff 30-40%
Watering once a day (0.5L to 1L depending on the plant)
PPFD 350-450
CO2 500-800ppm
Room temperature 25-27°C / 77-80°F
Room humidity 60-70%
Watering solution: plantprod calmag 13-0-13 (1g/L), ppmj grow (1g/L), silicate (0.4g/L), seacrop (1mL/L) and H2O2-hydrogen peroxide (1mL/L)
@bili_isiro Looks like root rot is a strong possibility… I would investigate the roots she looks to be struggling in all aspects that would point to the roots. Looking at your feed/watering regime I think you should look into your inputs. I am not familiar with all those inputs but generally do not recommend running sterile in Coco or soil much better options out there for those mediums. Not too sure on the rest of those inputs so do your home work to make sure you are running a decent proven ratio for all inputs … Cheers !!!
I’m not saying this is your problem and I see EC levels used that contradict what I’m about to say but I’m a fan of consistent EC. You need to water those plants a lot sooner. Allow it to rise by a couple of points. Once it’s creeping up by 0.5/0.6/0.7 you’re in a state of constant adjustment.
That first pic is a big ol’ plant in dry coco. I’d say your plant isn’t able to transpire adequately. That’s also a low ppfd considering the inputs.
I’m not saying that’s a cure but it’s something I notice straight away from the information given.
do you include perlite or any other aeration/conditioner? if not…i lean towards root rot as your issue since there doesnt seem to be any pest signs like leaf marks. spots, or webbing.
also, CO2 in veg plus low ppfd? i dunno… also, H202 is ok sometimes but even if youre trying to fight root rot, if youre giving it every day (specially if its not low %, although it seems youre diluting it quite a bit, dont know the starting point )… id be weary also, if those pots are plastic maybe theyre having issues with space?
Def root zone issues man and I would prob take lower cuttings and run again bc root rot nearly impossible to fix in reference to photo #1. One thing I’ve learned through the years of growing and making mistakes is knowing when to move on which is another reason why I always have seedlings waiting on the wings
We have been in your shoes, IMHO. No disrespect at all!
I do not understand the CO2 use for mom’s?
Nor do I understand the run off at 40%, then you add more water/tea the next day?
H2O2, every watering?
I use some when cracking seeds.
I think your killing off any possible beneficial bacteria, in your root zone.
I’d yank them out of their pots, smell and inspect the roots to each one.
But whatever that is it’s looking systemic.
In the top picture, the top half the plant could be cut off, to maybe save the lower portion, if you do yank them.
Good luck in your endeavors.
EDIT: I tried to post up a copy of OldTimers1 E-book he gave me long ago now, How to Keep Bonsai Mom’s, but it’s a very old format, and I do not know how to upgrade it to this one. Sorry.
If EC is building up in medium, pH goes down (more salts), as if you put more nutrients in the same amount of water, EC goes up, pH goes down, more concentrate.
Personally would start by re potting in a bigger pot.The roots are suffocated due to being root bound, the soil is like burlap from it. They don’t look to bad and i’m sure they will recover after repotting🙂
DAMN, that hyperlink and UK420 is on the last page!!
Why did I not think to post it, like you did?
Thank you, I use that information to this day. He gave a copy to me, when I joined in 99, as I donated to the site.
That is not correct, I found OG in 99, I did not join for another 9-10 months, as I had zero idea, how to use my computer, well I used it like a chicken walking across the keyboard would.
I would try a different fertilizer. Something basic like a two part hydroponic nutrient. Don’t water until the leaves start to droop a little. Bring the PH down some. And definitely check the PH meter calibration
The burnt tops, and healthy green lowers, are saying you are getting light or heat burn… are you sure you are only giving 350-400ppfd? What kind of light? Also, are you sure your PH meter is calibrated? Your PH could be off, and cause these symptoms.
You use Plant prod MJ pro grow, which has a nutrient content of 12-8-26 --the bag of which says to use during veg weeks 2-3-- , and you say your cal mag is 13-0-13? These nutes are very heavy on the N and K, and very low on the P.
These numbers don’t add up to a nutrient formulation that should be used for too long without causing issues, please clarify… plant prod pro sells Plant-Prod 6-11-31 for general purpose growth, that would be a better nutrient ratio to feed plants to keep them generally healthy.
My best word of advice for us more prone to overwatering is add a root guard product to your watering regimen (Hydroguard) or similar Bacillus amyloliquefaciens. Can be used in any medium and added to any nutrients. It really helps in overwatering It can be the difference between getting root rot or moving along no issues. Cheers !!!
