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Back to Grow Questions
Potassium deficiency?
SmokeBigBuds
started grow question 3 years 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 3 years 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 3 years ago
Looks like nutrient burn
1 like
Complain
Disn00f
answered grow question 3 years ago
Looks like it needs a little more K. Looking good.
1 like
Complain
Similar Grow Questions
Solved
BelSun_420
About plants ..
For those who have dealt with nitrogen deficiency, after correcting it, did the affected leaves regain their color, or did they stay the same while only overall plant health improved?
Leaves. Color - Yellow
23 days ago
10
7
Solved
akiokwon
What issues do i have with leaves?
I couldn‘t figure out the issues so i‘m leaving it to community. BioCanna soil with BioVega, BioBloom, BioFlores and Bio Rhizoton in 11l pot, Lumatek ATS 200W PRO (75%) in a 80x80 mamooth box. Light is at 50cm, climate is at 23C and 53% Thank u guys!
Leaves. Color - Yellow
a month ago
4
Solved
Lapaluma420ohe
Verfärbte Blätter
Verfärbte und teilweise vertrocknete Blätter bei meiner Autoflower in Woche 9. Nährstoffmangel, Nährstoffüberschuss, zu viel Licht? Grobe mit biobizz biogrow, biobloom und topmax. Woran könnte es liegen?
Leaves. Color - Yellow
Leaves. Color - Dark-brown
a month ago
3
3
Solved
mck372
mid-flower yellow leaves
Hello! I'm growing my first non-auto, a SkittleZ, it got quite small and the leaves are yellowish,I'd like to know what mistakes I made and what I can do to help her Mars Hydro TS1000 and only BioBizz nutrients. Temp is around 18C at night and 25/26C during the day, 40% hum
Leaves. Color - Yellow
Feeding. Deficiences
a month ago
2
6
Solved
BelSun_420
Any thoughts on what it could be? 🤔
I did some research and have my suspicions, but I'd like to hear your opinion! 🤔
Leaves. Color - Yellow
a month ago
4
3
Solved
FeebleSnane
Leaves turning yellow and dying
I have a plant that gets a lot of rust spots, even though I give it CalMag once a week. That plant also started getting a handful of leaves that turn yellow and fall off. Is there a nutrient I'm missing in my regiment? Should I do CalMag every watering for the rust spots?
Leaves. Dropping off
Leaves. Color - Yellow
Feeding. Deficiences
a month ago
2
Solved
hightech316
Nutrient burn , this bad?
Started off in hot soil. My first organic run. 5th week bloom. 75degrees 35rh. 300w led 21" from canopy.Soil pH 6-7 Using Gaia Greens top dressing for feed . All Purpose and Bloom. Added Gaia all purpose to the soil, then extra non needed amendments.Not needed .Top fed monthy
Leaves. Edges burnt
Leaves. Tips - Burnt
Leaves. Dropping off
a month ago
4
3
Solved
N_90_S
Yellowing tips
Hi, I'm a newbie grower here. I have an autoflower that is nearly weeks old. I have started to notice some yellowing tips on the leaves. I have been feeding it some vitasol and pm13/14 as well as watering every two days. The growing medium is worm casing compost and perlite.
Leaves. Tips - Burnt
Setup. Strain - Autoflowering
a month ago
1
1
Solved
Jaschkoo0
Overfeeding or something like that?
What do you guys think that could be the runoff have 6.2 ph and 1.4 ec i know that o gave to much nutriens a week ago because auf to less calmag but now i gave calmag two times since then and just water so the ec geht's lowr but the plant get even worser looks.
Leaves. Tips - Burnt
Leaves. Curl down
a month ago
1
3
Solved
fathermichael
Sudden Leaf Yellowing – Lighting Issue or Something Else?
Hello! Yesterday, I noticed the top leaves turning slightly yellow, but today it looks dramatic. Check the pictures—leaves are yellowing and drying out rapidly. It’s only affecting the central leaves, so I suspect a lighting issue, but I’d like to confirm before taking action.
Leaves. Curl up
Leaves. Color - Yellow
a month ago
3
Solved
SmallCannabisDojo
Potassium excess, PH or calcium?
What happened to my plant. Is this excess potassium, ph imbalance or calcium issues? This only happens on some lower small leafs.
Leaves. Color - Yellow
a month ago
7
6
Solved
DuschkabinenGrow
Plant deficiency pale/yellow leaves
Does anyone have an idea what deficiency or issue my plant might be experiencing? Any suggestions would be greatly appreciated!
Week 3
Leaves. Curl up
Leaves. Color - Yellow
Leaves. Color - Pale
6 days ago
4
4
Solved
CoolGuy123
Leaves keep turning brown and yellow
It all begann with what I thought was light burn. I then considered it CalMag deficiency. Giving it CalMag did not stop it. My current guess is too low pH due to strip inaccuracies, so I gave it around 8 today instead. What do you recon, why could it keep getting worse?
Leaves. Color - Yellow
Leaves. Color - Dark-brown
7 days ago
4
Solved
Ogchemst
Why does my pH keep changing in Germany? I set my water at 5.9 then it shifts 3-4 times over few hours, causing lockout if I water my plants with it, In Ireland, I never had this issue. Using Advanced Nutrients A+B, Big Bud, Overdrive. Could German water be the problem? Any fixes
Leaves. Tips - Burnt
Leaves. Curl down
12 days ago
2
6
Solved
Martian
Nutrient deficiency?
Dear grower, I am having an issue with slightly yellow leaf tip. I only used BioTabs Plant Perfect Package. I am suspecting she needs some extra food, but I don’t want to over feed her. Considering giving her BioBizz Grow (little by litttle). Do you recommend this technique?
Week 5
Leaves. Color - Yellow
10 days ago
7
6
Solved
Spike_KCanG
Nitrogen toxicity or deficiency? Or just PH issue?
Hi buds. Gonna need your expertisè again. My Grandaddy Purple auto is showing signs of something. Leaf claw: N-toxicity or PH issue Leaves fading: N-deficiency or PH issue What do you think changed this one leaf, and what do you think is going on with the other leaves?
Week 10
Leaves. Veins - yellow between
Leaves. Color - Yellow
Feeding. Deficiences
17 days ago
5
3
Solved
GEESTGROW
Black tips and spots on the leaves
I'm having problems with the leaves. I estimate that the plant has about two or three weeks left to live, and I don't want to have issues now. Some tips are darkening, and spots are appearing on the leaves
Leaves. Color - Yellow
Leaves. Color - Dark-brown
15 days ago
3
2
Solved
Gorilla_cookies92
is this calmag defiency and nitrogen defiency? Couple of lower leaves turning yellow and couple leaves have brown Spot. Gorilla zkittlez auto day 39 and w
is this calmag defiency and nitrogen defiency? Couple of lower leaves turning yellow and couple leaves have brown Spot. Gorilla zkittlez auto day 39 and week 2 of flowering. I use biobizz Light mix and biobizz nutrients and ph is 6.5.
Leaves. Color - Yellow
Leaves. Color - Dark-brown
15 days ago
2
3
Solved
VikingFloh420
Proplems with leaves
hi i got a question my plants show yellow leaves or damaged tips anyone knows whats going on? Lamp ts-1000 150w on 45% in the 4 week and only 2 feedings till now
Leaves. Tips - Burnt
Leaves. Color - Yellow
21 days ago
4
5
Solved
Cs2810
Hilfe!!!
Liebe Grower, bitte um Hilfe... Seit 10 Tagen in der Blüte PH 6.5 CALMAG Probleme? Oder nährstoffmangel?
Leaves. Color - Yellow
20 days ago
2
4