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- #341
How do I fix that?
Momma's Kitchen Serving: My Bloody Valentines
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Phosphorus deficiency
Give a couple of doses of bloom type nutes.
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- #343
Also I haven't seen this issue on any other plants in the room just the red afro #3
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- #344
Looks like that. Does it only affect the fan leaves?
Does it continue to get worse or will Mega Crop catch up with it with the increase of food last week? 22.5 g
Does it continue to get worse or will Mega Crop catch up with it with the increase of food last week? 22.5 g
The increase in MC should help, it starts low on old growth. If you have a bloom nute you could give a dose and at least stop it in it’s tracks
OK. It just seems to me like something going on in the soil. Maybe the pH.
OK, that should be fine.
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- #347
I'll look what I have. I may have to get some new stuff. I am sure my old stuff expired now
A phosphorus deficiency tends to be more common after plants start making buds in the flowering stage. Cannabis plants tend to love phosphorus in the flowering/budding stage and it is unlikely for a cannabis plant to get too much phosphorus using standard nutrients formulated for a flowering plant like cannabis. Nearly all flowering nutrients will come with an abundance of phosphorus for your plants. So if you’re seeing a cannabis phosphorus deficiency while using standard cannabis nutrients, chances are you actually have a root pH problem (explained below in the solution section)!
Phosphorus (P) is used by your cannabis plant in all phases of growth. It is one of the 3 major nutrients (N-P-K) listed on the front of most nutrient bottles, and phosphorus will be represented by the second number that appears.
When there is a phosphorus deficiency, the lower (oldest) leaves turn dark green. Leaves occasionally get a bluish or bronze tinge, and may thicken or curl downward before exhibiting dark gray, bronze or purplish splotches. Sometimes the stems of the affected leaves will turn bright red or purplish, usually starting from underneath.
It’s common to see a Phosphorus deficiency accompanied by the symptoms of a Calcium deficiency, as those nutrients interact with each other in the plant.
Sometimes you will get a cannabis phosphorus deficiency, and the stems do not appear red or purple at all, or the coloring may not be pronounced.
The leaf below was at the bottom of the plant and turned dark green and shiny, with a bluish tinge. Cannabis phosphorus deficiencies usually appear on the lower/older parts of the plant. The leaf then started showing the spots of a phosphorus deficiency where it was being touched by light (the parts of the leaf working hardest). The leaf began to curl downwards and turn yellow.
Notice that the stems or veins never turned red or purple on this leaf, except for some parts that were actually affected by the phosphorus deficiency.
Read more about it here.
Phosphorus (P) is used by your cannabis plant in all phases of growth. It is one of the 3 major nutrients (N-P-K) listed on the front of most nutrient bottles, and phosphorus will be represented by the second number that appears.
When there is a phosphorus deficiency, the lower (oldest) leaves turn dark green. Leaves occasionally get a bluish or bronze tinge, and may thicken or curl downward before exhibiting dark gray, bronze or purplish splotches. Sometimes the stems of the affected leaves will turn bright red or purplish, usually starting from underneath.
It’s common to see a Phosphorus deficiency accompanied by the symptoms of a Calcium deficiency, as those nutrients interact with each other in the plant.
Sometimes you will get a cannabis phosphorus deficiency, and the stems do not appear red or purple at all, or the coloring may not be pronounced.
The leaf below was at the bottom of the plant and turned dark green and shiny, with a bluish tinge. Cannabis phosphorus deficiencies usually appear on the lower/older parts of the plant. The leaf then started showing the spots of a phosphorus deficiency where it was being touched by light (the parts of the leaf working hardest). The leaf began to curl downwards and turn yellow.
Notice that the stems or veins never turned red or purple on this leaf, except for some parts that were actually affected by the phosphorus deficiency.
Read more about it here.
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- #349
I'll check the ph this morning
Dusted
Well-Known Member
Thanks for that. I had read that Cannabis didn’t need as much P as most formulations contained so I went with the lowest P out of many different manufacturers. I also switched from phosphoric acid to sulphuric acid to neutralize my tap water to further reduce the P. I add CalMag and I know my pH is correct. I now have the red petioles and browning patches on the older leaves in the light. I guess it’s back to phosphoric acid for me.A phosphorus deficiency tends to be more common after plants start making buds in the flowering stage. Cannabis plants tend to love phosphorus in the flowering/budding stage and it is unlikely for a cannabis plant to get too much phosphorus using standard nutrients formulated for a flowering plant like cannabis. Nearly all flowering nutrients will come with an abundance of phosphorus for your plants. So if you’re seeing a cannabis phosphorus deficiency while using standard cannabis nutrients, chances are you actually have a root pH problem (explained below in the solution section)!
Phosphorus (P) is used by your cannabis plant in all phases of growth. It is one of the 3 major nutrients (N-P-K) listed on the front of most nutrient bottles, and phosphorus will be represented by the second number that appears.
When there is a phosphorus deficiency, the lower (oldest) leaves turn dark green. Leaves occasionally get a bluish or bronze tinge, and may thicken or curl downward before exhibiting dark gray, bronze or purplish splotches. Sometimes the stems of the affected leaves will turn bright red or purplish, usually starting from underneath.
It’s common to see a Phosphorus deficiency accompanied by the symptoms of a Calcium deficiency, as those nutrients interact with each other in the plant.
Sometimes you will get a cannabis phosphorus deficiency, and the stems do not appear red or purple at all, or the coloring may not be pronounced.
The leaf below was at the bottom of the plant and turned dark green and shiny, with a bluish tinge. Cannabis phosphorus deficiencies usually appear on the lower/older parts of the plant. The leaf then started showing the spots of a phosphorus deficiency where it was being touched by light (the parts of the leaf working hardest). The leaf began to curl downwards and turn yellow.
Notice that the stems or veins never turned red or purple on this leaf, except for some parts that were actually affected by the phosphorus deficiency.
Read more about it here.
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- #351
Thanks @BacklipslideA phosphorus deficiency tends to be more common after plants start making buds in the flowering stage. Cannabis plants tend to love phosphorus in the flowering/budding stage and it is unlikely for a cannabis plant to get too much phosphorus using standard nutrients formulated for a flowering plant like cannabis. Nearly all flowering nutrients will come with an abundance of phosphorus for your plants. So if you’re seeing a cannabis phosphorus deficiency while using standard cannabis nutrients, chances are you actually have a root pH problem (explained below in the solution section)!
Phosphorus (P) is used by your cannabis plant in all phases of growth. It is one of the 3 major nutrients (N-P-K) listed on the front of most nutrient bottles, and phosphorus will be represented by the second number that appears.
When there is a phosphorus deficiency, the lower (oldest) leaves turn dark green. Leaves occasionally get a bluish or bronze tinge, and may thicken or curl downward before exhibiting dark gray, bronze or purplish splotches. Sometimes the stems of the affected leaves will turn bright red or purplish, usually starting from underneath.
It’s common to see a Phosphorus deficiency accompanied by the symptoms of a Calcium deficiency, as those nutrients interact with each other in the plant.
Sometimes you will get a cannabis phosphorus deficiency, and the stems do not appear red or purple at all, or the coloring may not be pronounced.
The leaf below was at the bottom of the plant and turned dark green and shiny, with a bluish tinge. Cannabis phosphorus deficiencies usually appear on the lower/older parts of the plant. The leaf then started showing the spots of a phosphorus deficiency where it was being touched by light (the parts of the leaf working hardest). The leaf began to curl downwards and turn yellow.
Notice that the stems or veins never turned red or purple on this leaf, except for some parts that were actually affected by the phosphorus deficiency.
Read more about it here.
I'm heading out there so I send clearer pictures.
I have a couple older bottle of bites so I'll see what I've got. I may have to buy new stuff.
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- #352
So I don't have any "P" single use. Only NPK
general organic Bio Marine 2-3-1
that's about it for anything with P
I'm not going to use it. It will effect the N &K so I'll head to the grow shop and find something.... any recommendations? Pls pls pretty pls haha
Thanks for all your help.
general organic Bio Marine 2-3-1
that's about it for anything with P
I'm not going to use it. It will effect the N &K so I'll head to the grow shop and find something.... any recommendations? Pls pls pretty pls haha
Thanks for all your help.
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- #353
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- #354
The fan leaves literally snap off when you touch them.
Doing a slurry test....
Doing a slurry test....
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- #355
It's snowing!! Happy Winter solstice!
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- #356
Okay Slurry is slurry!
So if I'm reading the color through the settled fibre/ water it looks like it's at 5.0
Too low. So I have to raise it.
I also noticed some plants aren't drinking well. I'm guessing this is a side effect.
So if I'm reading the color through the settled fibre/ water it looks like it's at 5.0
Too low. So I have to raise it.
I also noticed some plants aren't drinking well. I'm guessing this is a side effect.
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- #357
I feel like I may loose them.... 
wtf happened.
It is only effecting the RA #3
So because some aren't drinking much, how do I know how much PH+ to add? I was suppose to normally feed today but the pot has about 1/4 weight left in the bottom so I will wait another day, which now makes me concerned that they aren't getting the basics and will be set backwards. How did they get hot? I am so shocked. Not ALL #3 have it, can I reverse it?
wtf happened.It is only effecting the RA #3
So because some aren't drinking much, how do I know how much PH+ to add? I was suppose to normally feed today but the pot has about 1/4 weight left in the bottom so I will wait another day, which now makes me concerned that they aren't getting the basics and will be set backwards. How did they get hot? I am so shocked. Not ALL #3 have it, can I reverse it?
How are you doing the slurry test? Color strips are not the best way but will do in a pinch. Typically MC will cause the pH to rise in Promix.
How much is she being fed?
How much is she being fed?
First thing I would do is rinse her out real good with 8L of water. Then do another slurry test and let it sit for a while. Then come back with 4.5g/4L of MC after the slurry test.
– Distilled water
– Soil samples
– Standard pH meter
– Containers for holding soil samples
– Kitchen scale
And this is how it works:
1. Start by taking soil samples at various points in your garden. You should take the soil samples from the same depth every time. Measuring the samples separately will always give you a clearer view of the pH at different points in your garden. But, if you have a very small garden you could also mix your soil samples together in equal parts.
2. Add 1-1,5ml of distilled water for every gram of soil. So, if you have 50 grams of soil, add 50-75ml of distilled water.
3. Stir for a few seconds and then let it sit for at least an hour.
4. Stir again and stick in your pH meter. The value you read will not be 100% accurate, but it will give you a clear indication of where your pH is at.
SLURRY SOIL PH TEST
The slurry test is the most accurate test you can do without actually buying a specialized pH meter for measuring soil pH, your standard pH meter will do fine. Don’t forget to calibrate your meter first, and to clean it properly afterwards. This is what you’ll need for the test:– Distilled water
– Soil samples
– Standard pH meter
– Containers for holding soil samples
– Kitchen scale
And this is how it works:
1. Start by taking soil samples at various points in your garden. You should take the soil samples from the same depth every time. Measuring the samples separately will always give you a clearer view of the pH at different points in your garden. But, if you have a very small garden you could also mix your soil samples together in equal parts.
2. Add 1-1,5ml of distilled water for every gram of soil. So, if you have 50 grams of soil, add 50-75ml of distilled water.
3. Stir for a few seconds and then let it sit for at least an hour.
4. Stir again and stick in your pH meter. The value you read will not be 100% accurate, but it will give you a clear indication of where your pH is at.
I doubt it's the citric acid if it's only on one plant, and I spray and put them in the sun without burning. As long as it's just a 1% solution that is.
Are these leaves the same ones as the top pic here? I mentioned those looked pretty funky back then and wonder if it goes back to last week.
You don't have a pH pen?
Are these leaves the same ones as the top pic here? I mentioned those looked pretty funky back then and wonder if it goes back to last week.
You don't have a pH pen?
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