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Back to Grow Questions
Deficiency?
BrannabisTHC
started grow question 5y ago
Hey everyone. Does anyone maybe know what's causing this discoloration?
Solved
Leaves. Color · Dark-brown
1 like
Roberts
answered grow question 5y ago
She wants more potassium and phosphorus and less nitrogen in her diet.
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Selected By The Grower
Similar Grow Questions
Solved
fiadhok
Hojas manchas marron
The leaves of my plants have started to have spots, I've been told to spray them with potassium soap and neem oil at night, but it's getting worse each time. Could it be a lack of nutrients? Some fungus? Or leaf burns from potassium?
Leaves. Color · Dark-brown
Leaves. Color · Mottling
6y ago
2
1
Solved
yatzi
Leaf spots!
Leaf septoria or nute deficiency? Don't have ability to monitor pH or ppm. Do I cut the affected leaves off or any other home brew solution? 3 different plants in the photos.
Leaves. Color · Dark-brown
5y ago
1
5
Solved
minibox
Calcium or roots trouble?
Hello happy grower, New week and new trouble but on the second plant. Those brown dots appear today. Is it a cal/mag defficiency or roots trouble? I will check roots tonight. Thank you forward for your advise!
Week 6
Leaves. Color · Yellow
Leaves. Color · Dark-brown
Feeding. Deficiencies
4y ago
10
11
Solved
Terra_Farma
Brown Patches on Older Leaves
Slight yellowing and brown mottled patches. Only on one of the two plants and they’ve been treated and fed exactly the same. On some older fan leaves, no signs of anything on new growth. Anything to worry about at this stage? Maybe just a sensitive pheno? Any advice appreciated.
Week 7
Leaves. Color · Dark-brown
6y ago
3
3
Solved
Kripoulas
Deficiencies? Brown spots, yellowing and purple stems
What is this deficiency or maybe toxicity and whats the solution? She is fed with biobizz chart instructions but with every other watering. She is big so I'm guessing I should water with nutes every time? She showed this first week into flowering.
Week 6
Leaves. Color · Yellow
Leaves. Color · Dark-brown
Plant. Stem · Red or purple
6y ago
3
3
Solved
GrowerNL
Rust on leaves PLEASE HELP!!
Rust on leaves i water with pH 5,8 EC 2,0 i grow coco EC runoff 1,8-1,9 pH runoff 7,0-7,5 but pH runoff coco is not something to rely on i don’t use calmag want to use it since this problem i have given him some pK today
Leaves. Curl up
Leaves. Color · Dark-brown
Feeding. Deficiencies
6y ago
1
Solved
Grazynka
Flush or what to do ?
Advice please. I watered yesterday but the stains on the leaves are getting worse. Now I don't know if it is deficiency of cal n mag due to nutritient lock out which might be due to ph being off as I have 5 reders and all of them show a different thing. 🤦♀️...or it is it rust?
Week 7
Leaves. Tips · Burnt
Leaves. Color · Yellow
Leaves. Color · Dark-brown
4y ago
1
1
Solved
Growjardin
Curling leaves and browny patches
Leaves curling down after 3 hours of light on so far, in coco soil, airpots, been watering once a day feeding once a week. Brown patches too, thinking up the feed or over water as was sitting in water in the pot saucers
Leaves. Curl up
Leaves. Color · Yellow
Leaves. Color · Dark-brown
6y ago
2
Solved
Royalgorillaxx
Whats wrong???
What's wrong???
Leaves. Curl up
Leaves. Color · Dark-brown
Plant. Other
6y ago
3
Solved
greenthumbartisan
Look like Zinc and Calcium deficiency? Watering with 5.8/5.9pH, 2.06 EC (Runoff 5.8pH, 0.78 EC) Few leaves had small nutrient burn on the tips earlier this week. Nutrient burn appears to have tapered off.
Week 6
Leaves. Color · Yellow
Leaves. Color · Dark-brown
6y ago
2
5
Solved
HomeGrown33
Brown Spots on Leaves
I’m noticing some light brown spots on my leaves. After researching it seems that it was either 1) Manganese deficiency 2) calcium deficiency or 3) overwatering. I don’t think I’m overwatering. It could be the nutrients but would like input!
Leaves. Color · Dark-brown
Leaves. Color · Mottling
2y ago
5
3
Solved
THCanbisGrower
What happen with my leaves?
There are brown and red black spot on my leaves. and lower the top there are brown red and white spot mix together on my leaves. anyone know this problem??
… Show more
Leaves. Color · Dark-brown
Leaves. Color · Mottling
Leaves. Other
4y ago
3
Solved
WorldPeas
Rust Spots
Rust spots on fan leaves. Suspected nutrient burn as I let the medium get too dry. Though it would be helpful to get others opinion.
Week 7
Leaves. Curl down
Leaves. Color · Dark-brown
4y ago
1
4
Solved
Grrrower
What’s appening to the little northern light auto?
so far I have only given her the rqs growtablets plus a break of plain water and given this reaction today I have also started to give her some advanced nutrients (MGB) is it just a delayed nutrient problem or should I worry?
Week 3
Leaves. Webbing
Leaves. Color · Dark-brown
6y ago
2
2
Solved
Kenny82
Browning sugar leafs
Thanks for the tip it just so happens that I have Epsom salts as I already checked the water and soils ph, 👍
Week 5
Leaves. Color · Dark-brown
4y ago
2
Solved
EXZELENS
Is this Phosphorous deficiency or overfeeding?
It happened from day to night, the watering with Fish-Mix and Bio-Heaven was made days ago. Otherwise, I haven´t feed her any bloom nutes yet. Peace ✌️
Week 5
Leaves. Curl up
Leaves. Color · Dark-brown
Leaves. Color · Mottling
6y ago
2
2
Solved
xardas1977
Leaves problems
Hi friends, could this be lack of Calcium or some sort of fungi or xxx? Only 2 leaves on 1 plant affected...
Leaves. Color · Dark-brown
6y ago
2
1
Solved
TheProfessorGrows
PH Nute Lock!!
Having some serious PH and nute lock issues. Watered with nutes for first time last week. Started showing cal/mag deficiency. Tested runoff on last water and was at 5.5 with 6.5 in. Flushed with 7.0 water and runoff still 5.5. Plant seems to be getting worse!
Leaves. Color · Dark-brown
4y ago
1
1
Solved
HuskyHouse
Is this a phosphorus deficiency?
Phosphorus deficiency? Looks closest to a phosphorus deficiency on my chart, any better ideas and or recommendations? Current light brightness is 50 percent, running a spider farmer g3000 and Most of the leaves are pointing up.
Week 3
Leaves. Color · Dark-brown
1y ago
4
Solved
TheGreenQueen420
Nutrient deficiency? Any advice cheers?
Hi can anyone advise on this? Brown spots on fan leaves that has spread to the tip today. I have been going easy on nutes as I use all mix and root juice. I am starting grow next water and bloom next week. Ph to 6.3 Night temp 21 and day temp 26-29 Watering wet dry (not over)
Week 3
Leaves. Color · Dark-brown
6y ago
1
1