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Yellow leaves royal gorilla

Gio88

Active member
Hi! I’m growing outdoor a royal gorilla feminized, with an all mix soil, and i’m using biobloom and top max from biobizz with mineral fertilizer. I’m in the middle of the flowering phase (i live in north italy so the flowering phase has started in mid/end of august), now i’ve noticed these yellow leaves.... do you think the plant is healthy or there is a deficit of something? How can i solve? Ps few weeks and The climate should become colder... could this affect my harverest?thanks
 

Gio88

Active member

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Pumpkin

Active member
Veteran
I'm no expert, but maybe feed more and provide more drainage. That pot looks a bit weird to me, i'd transplant to a bigger plastic nursery pot with more drainage. Add some new soil and water a bit less often. Roots need oxygen as much as water. The yellowing is pretty normal though. But a bit more airy well drained soil with more nutrients may make a better plant if it is a gentle careful transplant. And even liquid feed a little. (Disclaimer:that is just what i would do) bigger pot, more soil, better drainage, more food. Win!
 

Creeperpark

Well-known member
Mentor
Veteran
Your plant is not getting enough light. The plant is shedding the oldest leaves to compensate for lack of light. The only thing it will hurt is the yield.
 

Gio88

Active member
I'm no expert, but maybe feed more and provide more drainage. That pot looks a bit weird to me, i'd transplant to a bigger plastic nursery pot with more drainage. Add some new soil and water a bit less often. Roots need oxygen as much as water. The yellowing is pretty normal though. But a bit more airy well drained soil with more nutrients may make a better plant if it is a gentle careful transplant. And even liquid feed a little. (Disclaimer:that is just what i would do) bigger pot, more soil, better drainage, more food. Win!
I’ll do it!! Thank you
 

Gio88

Active member
I’m starting to worry! I put my plant in a place where there aren’t Shadow points and added new soil but the problem doesn’t seems solved what can i do?
 

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Vandenberg

Active member
Let's see...

Let's see...

How much Biobloom and TopMax are you using?
How often do you water? Feed? Are you using tap water?
Do you know what the PH of your nutrient solution is?
All mix soil media mix is made by biobizz too, I see.
That should be of a good quality, I would imagine.

According to BioBizz:
Once you start using Bio Bloom, you should dilute at a rate of 2-4ml per litre of water and apply with every watering during the whole flowering period.
Top·Max can be used throughout the entire flowering period and works especially well combined with Biobizz substrate mixtures.
In the first weeks of flowering, we advise a dose of 1ml per litre of water.
As harvest approaches and before flushing, the dose can be increased to 4ml per litre of water.
Top Max is a combination of humic and fulvic acids.
the 100% organic Biobizz All-Mix is a specialist soil-based growing medium with a long-standing reputation for producing excellent results.

• Effective blend of soil, compost, worm castings and perlite
• Includes a special ‘pre-mix’ of biologically active organic ingredients
• Use throughout veg growth and flowering alongside BioBizz Nutrients

Vandenberg :)
 
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Gio88

Active member
I use the quantity written in the biobizz site , but i don’t know if i use it too often! For i few days i will use just ph water ... can i remove the yellow leaves?
 

Gio88

Active member
I see already brown pistils is it right?
 

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Gio88

Active member
I sprayed neem oil on the leaves , and now i'm just using water ( i use white vinegar to low the ph) do you think the situation is bad?
 

3snowboards

Active member
...a little plant in a little pot that gets little light needs little food
Vinegar to lower PH?
Might be pickled too
 

therevverend

Well-known member
Veteran
I think they're fine, it's natural for the lower leaves to yellow like that. I would remove the yellow leaves and not fertilize or spray them again. You're too close to harvest for that shit. Make sure it gets lots of sun, cut back on your watering. At this point it needs much less water then it did a couple weeks back. I can see a bit of thrip damage but it won't affect the flowers or harvest, not something to worry about. If it gets worse just pull the leaves with the most damage.

The hairs turning brown and withering might be natural or it might mean something's amiss. The first thing I look for is male flowers near by. If you don't find any it could be mites, cold, overwatering, fungal, any number of things to narrow down or it could be the nothing at all. The neem oil could have caused the hairs to wither.

At this stage it's too late to worry about major problems, the plants are what they are. Sit back, have a bong hit and a beer and enjoy the next 2-3 weeks watching your plant finish flowering.
 

Gio88

Active member
I think they're fine, it's natural for the lower leaves to yellow like that. I would remove the yellow leaves and not fertilize or spray them again. You're too close to harvest for that shit. Make sure it gets lots of sun, cut back on your watering. At this point it needs much less water then it did a couple weeks back. I can see a bit of thrip damage but it won't affect the flowers or harvest, not something to worry about. If it gets worse just pull the leaves with the most damage.

The hairs turning brown and withering might be natural or it might mean something's amiss. The first thing I look for is male flowers near by. If you don't find any it could be mites, cold, overwatering, fungal, any number of things to narrow down or it could be the nothing at all. The neem oil could have caused the hairs to wither.

At this stage it's too late to worry about major problems, the plants are what they are. Sit back, have a bong hit and a beer and enjoy the next 2-3 weeks watching your plant finish flowering.


Thank you! I hope everything will be fine!
 
T

Teddybrae

This is Senescence. The plant is maturing. It is 'getting grey hair'.

Another way to view this is that the lower leaves are no longer required for growth because the plant has entered its flowering phase. Thus the Potassium present in the lower leaves is moving to the buds.

Feed more potassium if you wish but I doubt it will prevent lower leaf drop esp if yr plant is a Sativa dominant variety. This is not a worry. As I said yr plant doesn't need them any more.


More potassium WILL grow bigger flowers though! Perhaps you could buy some high potassium kelp and foliar spray the plant. Which is what I do for bigger lowers.
 

Gio88

Active member
Maybe I’m overreacting, I see the plant not healthy is it right? I continue to see yellow leaves and the weather is getting colder and colder , the last days have been rainy!
 

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therevverend

Well-known member
Veteran
It looks okay to me I think your flowers will be fine. The cold isn't an issue as long as it doesn't freeze but it looks like the moisture is bothering it a bit. You can tell by the slight clawing and yellowing at the tips of the leaves. The plant is showing signs it's entering senescence, the last phase of it's life and is moving the energy from the leaves to the flowers to put all it's strength into reproduction. That's why the leaves are yellowing and droopy.

Keep an eye out for fungal problems. Watch the humidity levels. If they're above 85% at night you may have problems. Watch the flowers closely for mold and the leaves for powdery mildew. It looks like the sort of strain that's has mold resistance but you never know. If the day time high temperatures are above 22 degrees C you're in good shape, if they're 22-18 degrees C you're in the danger zone. Cold temperatures are actually good for cannabis at this stage, as long as they get good lighting. Mold doesn't do well below 18 degrees C.

Rain isn't bad unless it lingers for more then a day or two. If the flowers stay sopping wet for 2 or 3 days the mold can strike. Normally I'd strip all the fan leaves showing any yellow but I'd leave the yellowish-green ones because they help the plant shed moisture. The yellow ones should be removed because they spread disease and mold. I'd also strip the necrotic ones because the dead leaf tissue can mold.
 
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