Threads is in beta — try the new feed
Start My Diary
Start My Diary
Log In
Start My Diary
Home
Threads
Diaries
Strains
Shorts
Questions
Contests
Growers
Seeds
Breeders
Nutrients
Equipment
Blog
English
Log In
Sign Up
Following
Follow
Brands
&
Growers
to get updates
Back to Grow Questions
Help :)
JoshuaTreez
started grow question 5y ago
Is this potassium deficiency? Or nitrogen toxicity?
Solved
Leaves. Color · Yellow
likes
HighRoller909
answered grow question 5y ago
yeah both. Nitrogen excess can create potassium deficiency, bear in mind. Too much N will block usage of K
1 like
Complain
Selected By The Grower
Organoman
answered grow question 5y ago
I would go for potassium deficiency.
likes
Complain
Similar Grow Questions
Solved
hollyhustler
Is that just a light burn or could it be something else?
One bud in the middle of my plant is much lighter than all the others, which all look healthy and green. I think it was due to the too small distance of my light, which was only 20cm (8") between canopy and light. I have now moved the light to 35cm (14"). What are your opinions?
Week 8
Leaves. Color · Yellow
Setup. Lighting
5y ago
4
3
Solved
Mycorrhiza
Blueberry Auto is having some problems started since a week ago anyone got any idea what it could be ? It started from the first two fan leaves now it seems to go up. Also im color blind so sometimes its hard for me to see the first signs with the shades
Week 2
Leaves. Color · Yellow
Setup. Strain · Autoflowering
5y ago
6
3
Solved
YellahJelle
Nute defficient?
Are the leaves lookinkg okay? I believe that the newest fan leaves and branch leaves appear a bit bright in the middle. Is that nute defficient? And does she look healthy furthermore?
Week 8
Leaves. Color · Yellow
6y ago
1
2
Solved
Pucanz
Yeallow stripes 3rd week of flower
The plants begin to show signs of lack of some nutrient, and I can't identify what it will be ... the leaves are gradually starting to turn yellow ... will it be lack of cal-mag? Or other nutrient? Can anyone help me? Please!!
Week 9
Leaves. Color · Yellow
6y ago
1
4
Solved
stonedJesus
Please help. Last plant died exactly like this. Yellowing drying leaves from the bottom on all fan leaves while shoots get stunted / eventually affected.
Transp recently from 1g > 5g. Seemed ok at first day after (no wat) then leaves started rapidly yellowing / drooping. Tent is fairly small 40x40x120. Could it be the heat ? Also took out humidifier but still in same room tent vents. Is Canna Pro Plus watered between 5.8-6.2 ph ?
Week 5
Leaves. Tips · Burnt
Leaves. Color · Yellow
Plant. Stem · Red or purple
6y ago
5
8
Solved
MoWax
Yellow spots and dry ends on leaves
Hello! What could be wrong with the plant on the left? What do the spots on the leaves indicate? They are 17 days old.. Thanks for the info
Leaves. Dropping off
Leaves. Color · Yellow
Leaves. Color · Mottling
2y ago
2
2
Solved
fnzpator
Yellow spots on leaves in veg stage
I've got 15 days old Opium plant, about a week ago I noticed yellow spots on lower leaves. Substrate is Plagron Growmix, I believe it has optimal PH, I plant is watered once in 3 days with 6.5 PH-ed water. Now the spots have gone upwards also. Please help, what could be wrong?
Leaves. Color · Yellow
Leaves. Color · Mottling
4y ago
3
Solved
DabbertGlobberfield
Problems showing up in week 5 flower
I have a problem developing and showing signs through this week. Looks like at least a calcium and a potassium deficiency in one plant and a another deficiency just starting in another. Not sure how to fix this. First 8 are one plant, last 2 are another. Photos taken over a week
Week 20
Leaves. Edges burnt
Leaves. Color · Yellow
Leaves. Other
4y ago
1
6
Solved
Jerseyfresh39
Why is this plant more yellow? Nitrogen deficiency? It’s been having issues like this the whole grow. Ph of water has been a steady 6.5 -I top dressed with some bat guano 10-3-1. Will that fix it?
Week 11
Leaves. Color · Yellow
Feeding. Deficiencies
6y ago
5
4
Solved
Maskedcucumber
3rd week since 12/12 and chlorosis is getting worse !!! Will my crop be crappy ?
Brought EC to 1.6, added 21ml of calmag, had to add 2L of osmosis water because the EC was 1.78. I changed the bad Ph probe and I let it fluctuate between 5.75 and 6. Should I remove the aluminium foil on the pot to let them breathe ? Not sure they are overwatered, I'm desperate
Week 8
Leaves. Tips · Burnt
Leaves. Color · Yellow
Feeding. Deficiencies
5y ago
3
4
Solved
HallGenetics
Leaves Sad
Guys I'm a little worried and for a few days I've seen them falling and sad... I checked the ground with water RO + CalMag EC 0.3 Ph 6.4.... The outflow of my soil gave me Ph 6.6 EC 1.9 values on average! I fertilized three days ago with EC 1.8
Week 6
Leaves. Twisted
Leaves. Color · Yellow
Plant. Stem · Red or purple
3y ago
3
Solved
Stellarock69
plant discoloration
why is my plant discolored at the tips at this young age?
Leaves. Edges burnt
Leaves. Tips · Burnt
Leaves. Color · Yellow
6y ago
2
3
Solved
Smoth313
Yello Leafs
Yello Leafs more and more had the same problem last days.. i doubled the fetelizer last watering. but nothing changed its like they go faster and fast yellow. Only habe to feed Bio Bizz fetelizer that shows in the diary. All big Fan leafes are yellow now and fall of next days :/
Week 8
Leaves. Color · Yellow
2y ago
2
Solved
TegridyF
Yellow and fragile leaves 2 week
Couple leaves yellowing and bit curved up. I suggest there can be the options: 1) magnesium deficiency; 2) nitrogen deficiency; 3) Light burn. For case it is magnesium deficiency I sprayed the leaves with magnesium sulfate (solution - 1g per 1 liter), but it won't help.
Leaves. Edges burnt
Leaves. Curl up
Leaves. Color · Yellow
4y ago
1
Solved
THC_Hazeman
Correcting some things
My buddy is showing some deficiencies, might also indicate not right pH values. Should I wait for the soil to completely dry before correcting the pH or should I flush right away? Also why does it take 4 days for the soil to dry? I always make sure she drains every time.
Leaves. Color · Yellow
4y ago
1
1
Solved
val95
does this need more CalMag/ K?
im not sure what this deficiency is. im currently feeding them about 0.8ml/l Biobizz CalMag, pH around 6.5-7, RQS Easy bloom at half strength which is what they recommend for autos
Leaves. Color · Yellow
5y ago
3
Solved
sir_root
Light burn or nutrient burn?
I have noticed that the tips of the leaves are yellowing and curling a bit. I moved the lights up 2 days ago and I honestly don't remember if this was happening before or not. It could be nutrient burn too, since I have increased the watering schedule, they are thirsty. While
Week 11
Leaves. Tips · Burnt
Leaves. Color · Yellow
7mo ago
6
6
Solved
confectionerbuddha
yellow Tips
is ther any huge concern about a yellow dot on one of the tips of my seedlings leaf. Im growing in organic living soil and watering with Ph 7 tap water, it is a canuk cookies auto seedling
Leaves. Color · Yellow
5y ago
4
4
Solved
gsimd
My two Grandaddy Purple Autos are light green/yellow in color. Is a lack of nitrogen the cause or is it something else? What do you recommend to fix the issue?
Week 5
Leaves. Color · Yellow
4y ago
1
2
Solved
SupportiveMango
What nutrient deficiency is this?
What nutrient deficiency is this? Or is it nutrient burn? I'm watering with 5.5 PH using half strength Nutes, Root booster & Calmag. I don't think it relates to spiders mites since I can't see any with my 30x magnifier. Thank you so much in advance.
Leaves. Color · Yellow
Leaves. Color · Dark-brown
Other. Bugs
5y ago
3
3