The Grow Awards 2026 🏆
Start My Diary
Start My Diary
Log In
Start My Diary
Home
Diaries
Strains
Shorts
Questions
Contests
Growers
Seeds
Breeders
Nutrients
Equipment
Blog
Log In
Sign Up
Following
Follow
Brands
&
Growers
to get updates
Back to Grow Questions
Potassium Deficiency
The42
started grow question 5y ago
Is this potassium deficiency?
Open
Leaves. Edges burnt
likes
Answer
Chitown_grower
answered grow question 5y ago
I think she's just ready for some food. Probably hungry
likes
Complain
Fruitgrower
answered grow question 5y ago
I would doubt it at this stage of growth. Other reasons could be light or heat stress or ph in balanced
likes
Complain
Organoman
answered grow question 5y ago
To me it looks like potassium excess, not a deficiency of any sort. Decent soil will still have ample nutrients for baby seedlings, and at this age.
likes
Complain
Mikewithgreenthumbs420
answered grow question 5y ago
https://www.growweedeasy.com/cannabis-symptoms-pictures looks like potassium deficiency this site will have all needs for plant problems hope this helps
likes
Complain
Similar Grow Questions
Solved
ChrisFirst
Dry and curling, when flush?
Hey there - it’s my first grow ever (Gorilla Zkittles Auto), and I’m guessing I’m in flower week 7. my leave are going slightly dry and curling all over the place. Is this normal or did something go sideways… Also, how long until I should start to flush? Thanks for any help…
Leaves. Edges burnt
Leaves. Curl down
2y ago
2
2
Solved
BaBar
Début de floraison → Pointes des feuilles jaunissent et finnisent brulées
Bonjour :) Après 2 cultures (6 plants) j'ai toujours le même problème : les pointes jaunissent tout le temps (à partir du début de la floraison) et les feuilles finissent brulées Substrat : Biobizz All mix 1er culture : pas d'apport 2eme culture : Engrais liquide Biobloom
Leaves. Edges burnt
1y ago
4
Solved
Belgiums_basement_budz
Leafs are dry at the edge
What deficiencies can cause this leaf problem Ph feed is 6.8..she is in flower at the moment She is an outdoor plant
Week 1
Leaves. Edges burnt
6y ago
3
3
Solved
NutsInGuts
Seedling 1st leaves curling inwards
what might be a cause for the leaves curling in and looking a bit scorched. could it be that it wasn't getting enough water at the root?
Week 2
Leaves. Edges burnt
Leaves. Twisted
Leaves. Color - Dark-brown
6y ago
3
4
Solved
Quintus
Textbook deficiency/over feed, any advice on wich one ?
Hello guys ! I think i'm encountering a text book deficiency/over feed but can't figure out which one. This is a Frostbanger auto from 24buds in Plagron royal mix at week 4, under 150 led watt. Been giving her only some power roots & power zym with evaporated tap water :(
Leaves. Edges burnt
Leaves. Color - Yellow
Feeding. Deficiences
9mo ago
4
Solved
FatnastyzBudz
P lockout mid flower coco ph drop
Midflower lockout P starts, cal/mag is in line up. Week 3-4 runoff ph drops 5.2-5.3 then P. I follow success feed chart. Adjust feed to match intake but salts starting to stack and lockout. I have added add cal/mag. Maybe too dry, but still happens. Last feed 1050 still stackd
Leaves. Edges burnt
6mo ago
3
2
Solved
EmberWeed
What could it be?
I'm a relatively new grower and I don't have a diary setup yet. I know it's hard to diagnose a problem when there is no diary, sorry! They were good until they started to yellow. They are in their 5 to 6 weeks of flowering. Some are good some are yellow and I feed them the same.
Leaves. Edges burnt
Leaves. Color - Yellow
3y ago
5
4
Solved
Jea1986
Can someone help a beginner please ?
Can someone help please, I just got them last week I potted them and now the leaves look yelliw with dark Brown edges. Could it be too much nutrient? I did not Add some... maybe the soll?
Leaves. Edges burnt
Leaves. Color - Yellow
2y ago
1
2
Solved
JKT48
Dear ganja gurus, please have a look at my diary Wk17 D119. I'm thinking nute lockout due to pH always below 5.8. But any other inputs is most welcome. Nute is 50 ppm epsom, 100ppm CaNO3, 100 ppm MKP, and topped with 7-5-16 A/B to 900ppm.
Week 17
Leaves. Edges burnt
7y ago
1
1
Solved
Kmurr07
Do these look like they are ready for notes? Noticed the outer edges are starting to yellow. Just transplanted last week.
Week 2
Leaves. Edges burnt
3y ago
5
Solved
Dankbudz84
Nutrient burn or deficiency
Is this nutrient burn or nutrient deficiency? Two out of 6 has the entire first set of leaves like this.
Leaves. Edges burnt
5y ago
5
3
Solved
Go4Gav
Nutrient burns
Hi everyone , since before Xmas I've been having trouble growing anything .. seeds or clones .. all get nutrients burns bad .. I've never had this problem at all , I'm starting to think my soil is the problem , I'm using plagron 60/40 ..
Leaves. Edges burnt
5y ago
1
1
Solved
GanjaGartenZwerg
Problemen bei Grow
Große Problemen bei Wedding cake grow
Leaves. Edges burnt
Leaves. Color - Yellow
Leaves. Color - Pale
4mo ago
3
Solved
Khmma46511
funky leaves
My leaves are looking funky curling down and up, working on aphid issue. Lowered the nutrient ratio from 2 teaspoon per gallon to 1 teaspoon per gallon. Haven't started it yet, scared to right now. I'm in week 3 of flowering..
Leaves. Edges burnt
5y ago
1
Solved
Dr_Nowzaradan
Magnesium deficiency?
Could it be magnesium deficiency or something else? I'm already using biobizz cal-mag with the suggested dose. Tx
Week 9
Leaves. Edges burnt
Leaves. Color - Yellow
5y ago
3
3
Solved
Grow15
Deficiency/ excess not sure which one
So im not very sure what deficiency/excess might be going on here. But imma link somo photos so you guys can help me out if possible :) been feeding her remo nutes at about 900ppm I believe we are in week 5 of flower maybe 6
Leaves. Edges burnt
Leaves. Color - Yellow
4y ago
1
3
Solved
HiGH2DSKY
I have problem with my plants. Maybe caused adding root juice to watering to soon. Using all mix soil. 40% humidity and 27°C under 250w hps. 50cm distance from plant. Uploaded picture above. Tnx for any advice 🌱
Week 2
Leaves. Edges burnt
7y ago
1
1
Solved
Mani1728
Critical mass auto
What's going on here?
Leaves. Edges burnt
4y ago
2
6
Solved
Anorak
Tips burning, plants dying, very fast progression
Greetings growers! Plants are dying, every grow it starts in the 3rd week of flowering. Using Green House Feeding Organic, PH is up to the point,100% sure. Soil - light mix,vermiculite, perlite. Top leafs are burnt, bottom leafs are turning yellow and falling off.
Leaves. Edges burnt
Leaves. Tips - Die
Leaves. Curl up
4y ago
2
2
Solved
MindFlowers68
Thoughts on leaf symptoms
Week 11
Leaves. Edges burnt
1y ago
1