The Grow Awards 2026 🏆
Start My Diary
Start My Diary
Login
Start My Diary
Home
Diaries
Strains
Shorts
Questions
Contests
Growers
Seeds
Breeders
Nutrients
Equipment
Blog
Login
Sign Up
Following
Follow
Brands
&
Growers
to get updates
Back to Grow Questions
Potassium deficiency?
cooci
started grow question 6mo ago
Potassium deficiency? 3rd week of flower. Kosher Cake Auto by FastBuds.
Solved
Leaves. Color - Yellow
likes
AestheticGenetix
answered grow question 6mo ago
yes you are correct. Give her some pk and some cal mag and she will get better pretty quickly.
1 like
Complain
Selected By The Grower
00110001001001111O
answered grow question 6mo ago
Sure looks like it... i'd increase the k you provide while maintaining levels of other things, unless you see other symtpoms of relevance. If it's fine otherwise,, no need to rock the boat.
1 like
Complain
Similar Grow Questions
Solved
w33d_zm00k3r
Yellow signs
My babies seems to turn a little yellow. Is that normal, or do I have some issue(s) here?
Week 2
Leaves. Color - Yellow
4y ago
1
1
Solved
Mordeloth
burnt ?
I wonder what is the yellow on the leaf, is it caused by a drop of water when i was watering ? It appear before i even use nute. pĥ 6.2-6.5, 50-70 humidity and 25 degree
Leaves. Color - Yellow
5y ago
3
3
Solved
SpaceGreen
Yellow dots on top leaves
Can anyone help me to identify this problem? Maybe cal-mag deficiency?
Leaves. Color - Yellow
5y ago
1
1
Solved
Smile420
Leaves are lemon
Leaves are lemon colored after feeding. I normally give 900 PPM 6.3 PH. Previously I was missing Mg, so I put Cal-mag every time I gave water. Is there too much Cal-mag? Leaves are paper thin for only 1 day. Help me please. thanks for all the answers the 4th picture is 1 day be
Leaves. Color - Yellow
3y ago
1
Solved
VeggieTales
Yellowing and tips
Hey there fellow growers what am I looking at? I recently top dressed and then Noticed this happening to all of my plant. I’m growing in CoCo watering at 6.5 ph
Leaves. Tips - Die
Leaves. Color - Yellow
Leaves. Other
5y ago
3
5
Solved
AlexG
Nutrient deficiency. What is it lacking?
Can you guys help me figure out what my plant is lacking?
Week 4
Leaves. Veins - yellow between
Leaves. Color - Yellow
3y ago
3
3
Solved
MarisaG
Help!!!
Hi all! My fast Eddy is showing some strong chrolosis, purple stems and clawing. Her growth completely stopped :( I water her every 3 days +/-, fed her once with ghe tripart at half-strengh and pH 6,5. She responded a little to Epsom salt foliar spray... Help please!
Leaves. Curl down
Leaves. Color - Yellow
Plant. Stem - Red or purple
5y ago
1
1
Solved
purgen
Can't deal with yellowing leaves in 4th week of flowering
Been having this problem for a few weeks. I suppose its deficiency of Mag and for the last week or so I've been giving increased portion of CalMag (for 1.5l of distilled water TriPart grow 2.1, micro 2.1, bloom 3, Calmag 12ml). Should I give them more time or its something else?
Leaves. Color - Yellow
4y ago
5
Solved
Ferelite
Bottom of plant looking shit
Bottom of plant not looking too good, can't tell if from lack of light, over/under watering or the start of a nitrogen deficiency, plants been in super soil for 9 weeks so not sure if nitrogen is getting low. Started to look rough about a week ago
Week 16
Leaves. Too many
Leaves. Color - Yellow
Plant. Other
5y ago
4
1
Solved
Jamadeen
Lower leaves are yellowing and dying
Lower leaves are turning yellow and falling off, i know of the top of my head it might be Nitrogen deficiency or imroperly balanced PH but i use the same ammount every time which comes out at about 6,3, checked with chamical and digital device, more nitrogen added but no result.
Week 12
Leaves. Dropping off
Leaves. Color - Yellow
4y ago
2
Solved
Architect
WTF IS THIS
hello guys, is this deficiency? 50% coco 50% light mix because I thought that with 100% light mix I had toxicity, I did not add extra nutrients , humidity 35% something I will fix, also who knows why the package light mix biobiz says 1.2 ec while in the runoff EC Meter says 2.5
Leaves. Edges burnt
Leaves. Tips - Die
Leaves. Color - Yellow
5y ago
3
4
Solved
Murrod9106
Nutrients
Can anyone tell me if my ladies are lacking nitrogen
Leaves. Color - Yellow
Feeding. Deficiences
5y ago
2
2
Solved
Stinkygorilla
New growth lime green/yellow at centre
Please help me diagnose this deficiency or pest (plant 3 with the yellow new growth) last two pictures, no curling but looks like some pest damage, minor.
Week 15
Leaves. Color - Yellow
4y ago
2
3
Solved
Rayshian
What kind of deficiency is this?
The last blue dream plant I grew had the same issue but I’m not sure what it is. Any help would be appreciated.
Week 19
Leaves. Curl down
Leaves. Color - Yellow
4y ago
4
1
Solved
mrhat2001
Guys what’s the opinion on flawless finish for flushing. I have read on many forum sites that it does not do anything does anyone have any experience with such a solution. I have used it for the first week to flush the plants and I will use it for two days of the second week.
Week 16
Leaves. Color - Yellow
7y ago
1
1
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
1y 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
3y ago
1
Solved
Dillsnills
Need some help as to what's going on w this plant? Leaves are turning kinda yellow towards bottom, excess or not enough nutes?
Trying to figure out what's going on w this plant,lsd 25 auto, ppm runoff was 1400 w jus ph water going in,ph6.5, should I give a nute feeding next or stick w jus ph water, it's not showing any signs really of mute burn, jus a dose of calmag next feed or full nutes at 1/4 dose?
Leaves. Color - Yellow
Setup. Strain - Autoflowering
Feeding. Deficiences
5y ago
5
3
Solved
Noela
Discolored Older Fan Leaf
I’ve noticed a couple of the older fan leaves have changed colors. These are also fan leaves that unfortunately get pushed up against the spacebucket walls. So I’m curious if this is normal from them being pressed up to the walls or is it a deficiency? Should they be removed?
Week 8
Leaves. Color - Yellow
6y ago
1
4
Solved
BudmanFlyingjoint
Coco Grow Problems
Overwater? Underwater? Calmag deficiency? Coco Grow Start watering every day 2 times but now i am letting dem get dry. very confusing
Leaves. Color - Yellow
Leaves. Color - Pale
Plant. Wilting
2y ago
4
4