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Lower leaves start to turn yellow. I am pretty sure it is not overwatering this time. I water every 3 days until it drains out the bottom of the pot. This seems to keep it wet enough, after 3 days only the top 4 inch of the soil is dry. Lower is still moist. I water with rain water. (Still waiting for my order PH meter).
As this is fresh fertilized soil I doubt it is nutrient deficiency... But then, I am a rookie here.
Newbie:Now in three weeks: the lower leaves start to turn yellow quite fast and it is moving to the leaves above it already. One disformed leave as well. Growth seems to slow down a bit. This is fresh fertilised potting soil and I am pretty sure I am not overwatering. Any ideas?
Hi there Kees, so this is what happened : every time you water you’re slightly overwatering which is “activating” or “releasing” the nutrients in the soil a bit “too much” so over time there is an excess of Nitrogen which is causing “lock out” meaning the plant is not taking any more N, and of course in veg it does need N. So now you see the symptoms of N deficiency , but you know there is no deficiency. This you can see first on the leafs , the puffy space between the veins of the leafs is from overwatering, you can also see them wrinkled . Then the yellowing starting with the oldest leafs first , moving upwards . Hopefully there is not too much damage. You can fix this by following a more strict wet dry cycle , try the pot lifting method if you want to learn never to overwater again. Hope this helps ! 🚀
After my plant really didn't go to well, last week I ordered a starters set Canna bio fertilisers and a bag of Canna Terra.
I took a 10 liter jerry can and cut it so now I have a nice 6 liters pot with a handle to pull the pot forward when I need to do some maintenance on my girl.
My plant didn't do to well but after potting her over to the bigger pot and new soil she is starting to show a remarkable recovery!!
When potting her over, the soil was dry, so I am pretty much convinced now that overwatering really was not the problem, however all signals pointed to that direction...
Thanks to the starterskit and the new soil, finally there is a lot of growth! I dared to cut out the top but was careful. Considered the hight it is getting now I better had made the cut one leave lower, also because she starts to create new stems lower now. Anyway, for now I am pretty pleased with the result so far!
After a bad start she picked up really well a looks very healthy.
I am amazed how quick she is growing now. The new soil and canna bio fertiliser really seems to do its job!
The smell is very nice.
Last week I tried to create a scrogg screen, but I am having a hard time containing the two most up colas to grow under it, so now I drilled a few holes in the container and tried to bind them down.
As you can see in the pictures, trying to force her under the scrogg screen led to some misformed growth, wich probably stalls growth a bit. So I trie to prevent that now by tying her down. :-)
Let's see how this is working out.
I really don't want to grow her any higher now, because she will end up in the lamp when flowering. :-/ The (small) closed I am growing in is not that high.
However, I want to give her some time to grow the lower stems a bit longer before getting her to flower.
Fellow growers, after a few weeks of beautifull growth, I now start to get yellowing leaves which dry up and starve. I am. I am doubting between a lack of nutrification or over nutrification. I suspect the latter (biocanna nutrients and soil). Any ideas? Thanks!!
Overfeeding for sure. Measuring the EC of your runoff helps with this. If the EC in your runoff is going up after each feed, them you're probably giving too much nutes.
In this case the dark green foliage is a classic sign of too much N, but it looks like you have other toxicities as well. Almost never trust the feeding schedule on the bottle. Always start at 1/4 and slowly increase it. You'll rarely need to go past half strength in my experience.
The growth seemed to have stopped a bit, so I decide it was time to start flowering.
Also this strain is know to stretch quite a bit during flowering and the closet is not that high.
I also took of a few fan leaves, but really only a few, as there is a lot of light for only one plant. ;-)
I had a few times that in the morning (I light at night because of the cheaper electricity) the leaves were a bit droopy because probably the soil was not wet enough.
Still a bit scared and too careful to not overwater I guess... However, very pleased with how it is going so far.
Second week flowering. Stretching starts a little and I see the first signs of flowering.
Also see a new problem: leaves are canoeing downwards, see also the pictures. When I google a bit I get nitro toxification, overwatering or to hot but I guess neither of them seems to be the case here: I already cut back a lot on nuts, daytime temp is around 28C and the soil is not very wet or soaked...
2th week of flowering, first signs of flowering and stretching visible but leaves canoeing downwards, see pictures. Any idea's? Daytemp around 28C. Cut back on nuts already. Humidity around 45% during daytime.
Try going to a plain water/plain water/feed/plain water/plain water/feed schedule.
If you are feeding each and every irrigation, you will get a build up of fertilizer salts, especially if you are only giving 50-100mls and not flushing the substrate properly.
The symptoms appear very much like nitrogen overdose, and if you are feeding each time you irrigate, this would be plausible. Unfortunately these things build up slowly over time, until the plant can take no more and before symptoms appear, but by then the problem is intensive. Fixing the problem is also a long and slow process and is not something that can be remedied in a week. Flushing with lots of plain water can be dangerous too, as it may release more nutrient salts from the substrate and cause a bigger problem. Therefore, switching to a water/water/feed routine may be the first option in preventing the problem from getting worse, but there is no easy or quick fix. Hopefully by doing so, your plants new growth will be much more normal and some slow and steady healing can begin. With this water/water/feed schedule, you should be feeding your plants every 8-12 days, depending on how fast your substrate dries out. In about 3 weeks time, I would suggest giving more plain water between feeding, maybe a litre or a bit more, to begin flushing the substrate between feeds and to prevent from the nutrient salts building up again and causing your plants ongoing problems.
Hope this helps,.............
Organoman.
Not very much to mention this week.
Stopped all feeding in an attempt to stop N toxicity symptoms and the new leaves look better, so this seems to work.
Skipped a few weeks (about four, so this is actually week 14) because there was nog very much to mention.
The plant stayed very small and lost quite some leaves. also yellow and brown points on the leaves.
I suspected badly developed roots after overfeeding, but after the harvest the roots looked fine, so that was not the problem.
The buds are small but solid and sticky so I still have hopes my first harvest is useful.
What I want to try next time:
- Less light or more distance to the lamp.
- A pot that is open at the bottom, so I can better control watering. The soil seemed very dry when II emptied the container.
- less nutrients.
- maybe do some lollipopping as well, because lower on the stems are hardly developed buds that proably took energy from the good buds.
@CRiSPrGrow, Just checked, still feels moist lower in the pot, so I wil start with 50 ml tomorrow. Raise the humidity will not be easy, as she grows in a DIY minigrowbox in the livingroom 😎 Is about 50-55 though, so should not be bad...
@Keesdemees, damn, yes, there is some "inertia" involved fro when you fix the problem until when the problem stops spreading... you dont really need more than 50-100 ml ... try raising your humidity a bit also, it should help
@CRiSPrGrow, Thanks! Already far less water as with the first attempt but still to much I guess :-/.
Keep it dry now but the yellowing is getting worse, so she took a hit.
Let's see if she is going to make it. To be sure, for my third attempt I ordered special cannabis soil and a complete starters with nutrients and a feeding schedule. Sure want my third attempt to work out! Thanks again for answering my question.
It is like you said, but the distance is to close( or did you dimm the light=?
because the smaller plant looks goodd in leafcolor, just growing very " flat"
if you rise the light, plants grow towards
@Mrs_Larimar,
OK, thanks!
Yes, it is dimmed a bit (otherwise it is to hot in the closed), but also I just made the distance about 30cm more.
Let's see how it goes :-)
Thanks again!!
Hola mi hermano ! Le recomendaría hacer "defoliacion" para ir sacando esas hojas grandes para que crezca con mayor facilidad, dando luz y espacio a los pequeños brazos
@Greenwolvesfarmer,
Thanks man for the advice. I'll watch some YouTube video's how to do that. ;-)
Could this also be the reason that suddenly leaves are getting yellow? Or could this be overfeeding? ( I use biocanna rhizotonic and biovega, both 2ml/l for every watering)
I think I got a new hobby here, I like this a lot! 😀
Keesdemees
