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Back to Grow Questions
Potassium deficiency?
SmokeBigBuds
started grow question 4y ago
Possible potassium deficiency? I usually get burnt tips but these are starting to yellow down the sides too.
Solved
Week 7
Leaves. Tips - Burnt
Leaves. Color - Yellow
likes
PEACEMAKER
answered grow question 4y ago
She's beautiful looking like a lil calcium Deficiency that's all but she's beautiful 😍, good luck 👍
1 like
Complain
Selected By The Grower
ChitownCannaChica
answered grow question 4y ago
Looks like nutrient burn
1 like
Complain
Disn00f
answered grow question 4y ago
Looks like it needs a little more K. Looking good.
1 like
Complain
Similar Grow Questions
Solved
Bucket_Buds
Bottom leaves yellowing in flowering
My lower leaves started turning yellow and drying out, am I having nutrient deficiencies? My guess would be nitrogen or potassium but not sure, had some nutrient burning earlier so cut down on the feeding a bit.
Week 6
Leaves. Color - Yellow
4y ago
5
9
Solved
Pochette
Whats wrong with my leaves?
I made several mistakes like; - overfeeding with Cal-Mag - Lightburn - Physical Damage - Algea in the pipe. But can you diagnose what's the major issue? How can I prevent it? Yet the yield looks quite good. I dont know what to think.
Week 11
Leaves. Color - Yellow
5y ago
1
2
Solved
nancypotwin
Skinny, yellowing, distant growth
hello! can someone help me identify this problem? my plants are a little behind but i have an issue with two of them... the leaves are skinny and yellowing and pretty distant. the new growth starts off green but skinny and canoeing immediately. temp is around 73-75 degrees far.
Leaves. Color - Yellow
5y ago
1
2
Solved
Gram_Solo
Yellow tips?
I Noticed some yellow tips on the leaves last week Is this a nutrient deficiency or something else? Started about 2 weeks ago 🤔
Leaves. Tips - Burnt
Leaves. Curl down
1y ago
2
2
Solved
ccore
I am having issues late in flower. Curling leaves at the top and some brown spots. Please see photos marked #1 and #2. Last week I let her dry out too much (coco), so runoff EC eas very high. Have been keeping runoff below 1.1EC
Week 10
Leaves. Tips - Burnt
Leaves. Curl up
6y ago
1
4
Solved
Thatsmyfirsttime
Drying leaves, 10 days to harvest
Hi! All organic Lemon Potion CBD with 10 days left before harvest. Some of her leaves are yellowing and drying a bit. I gave her cow manure tea last week (other watered plant didn't show any problem) Is she drying naturally or..? Should I do something? Thank you :)
Leaves. Tips - Burnt
Other. Harvest - Drying
Feeding. Deficiences
5y ago
2
2
Solved
2020Grower
What can possibly be wrong ?
Still can’t Figure out why my plants turn yellow in coco. This is what I feed: 2ml flora nova grow 2 ml cal mag 1.5 ml Superthrive 3ml Rhizotonic 2ml dark energy 1 scoop per 10 gallon great white Temp 78-81 Humidity 60-75% 18/6 lights What the heck am I doing wrong?
Leaves. Color - Yellow
5y ago
2
3
Solved
LaFrenchCulture
The tips of the leaves turn yellow
The tips of the leaves turn yellow. I don't know how to identify the problem, is it the mycorrhizae that make them hungrier? Or do they just have too many nutrients?
Week 7
Leaves. Color - Yellow
5y ago
3
3
Solved
GhostGuyFarm
Leaves curl
I'm here again with a questions. There is a problem with my cheese. CalMag added, nutrients added, and leaves still have problem. They curl a lot. Check this photos, it looks like she eats itself... What's going on :O
Leaves. Curl up
Leaves. Color - Yellow
4y ago
4
8
Solved
Nigs4200
White spots on a few leaves
Any idea what these whitish yellow spots are? They appeared overnight. I'm growing in ffof with perlite and ewc. No nutes added yet, just bush doctor cal mag at half dose 3 days ago with great white, recharge, and photosynthesis Plus which was the last watering of 1.2 liters.
Leaves. Color - Yellow
Leaves. Other
1y ago
2
2
Solved
Dankdan
Dieing
Okay so I've come to check on them today and it looks like 3 of them dieing they all look like the pics
Week 8
Leaves. Wilting
Leaves. Color - Yellow
5y ago
1
Solved
Khanos
Why is my plant turning yellow?
Light distance 60 cm 600 watts. Why are the leaves turning yellow?
Week 14
Leaves. Color - Yellow
3y ago
2
2
Solved
JSanchezz
Deficit or too much fertilizer or EC in the soil pls help
I have been mixing my water with distilled water for 2 weeks before adding the fertilizer to correct my EC downwards. PH6.5 EC 800ppm after Fertalizer. Leaves are still Belbn but only top not bottom stems are purple.... I am honestly at a loss (2nd grow) should i flush or add P ?
Leaves. Color - Yellow
2y ago
2
4
Solved
DojaMon
leaves yellowing
northern lights auto in week 2 of flower: leaves started yellowing from the bottom. it’s been going on for about two weeks, and now the leaves around the middle are yellowing too, and some of the yellowed leaves have brown spots in the middle. 8L pot in coco, fed lucas formula
Leaves. Color - Yellow
Feeding. Deficiences
3y ago
5
Solved
Fre_84
Overfertilization? What could it be?
Hi guys I'm in the seventh week. What could it be? Out of 5 plants, of five different types, two plants have plagron substrate. The other three plants have a biocanna substrate and do not have this problem. Overfertilization?
Week 3
Leaves. Color - Yellow
Plant. Other
4y ago
2
3
Solved
MrTasuri
Nutrient lockout or light burn?
Hi guys. I'm facing problems after problems :/ I changed my soil and some of the plants turned back from yellow to green, which was very nice to see. However, now leafs tips seems to burn and I'm wondering does it look like nutrient lockout or light burn? Thank you!
Week 3
Leaves. Tips - Burnt
Leaves. Curl down
Leaves. Color - Yellow
4y ago
4
5
Solved
Dippp
Problem with plants in the 3rd week of vegetation.
Hello everyone, I am new grower, in the 3rd week, I started having issues with the leaves. Does anyone have a diagnosis for this? I am using I am using Advanced Nutrients (Coco Grow A and B, B-52, Voodoo Juice) Coco Soil Temp: ~26 C Rh: 60-65% Feminized seeds Thanks :D
Leaves. Tips - Burnt
Leaves. Curl down
Leaves. Color - Black or grey
1y ago
1
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. Deficiences
5y ago
5
4
Solved
HerbSeedman
Late flower leaf discoloration
What's up with these leaves? Night temps get down to 62-64F. About week 7 or so of flower. Giving 1/4 fox farm flower nutes every other watering, calmag or ph water in between. Day temps in high 70s low 80s.
Week 10
Leaves. Color - Yellow
4y ago
3
2
Solved
laxx
Yellowing and lightening of leaves
My back-left plant started to slightly yellow on me from the bottom up. Front-left is also lighter than the rest. Is this a feeding issue? Do they need more nitrogen or did I overwater them? Appreciate your answers :)
Week 12
Leaves. Color - Yellow
10mo ago
2
1