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
Potassium Deficiency
The42
started grow question 6y ago
Is this potassium deficiency?
Open
Leaves. Edges burnt
likes
Answer
Chitown_grower
answered grow question 6y ago
I think she's just ready for some food. Probably hungry
likes
Complain
Fruitgrower
answered grow question 6y 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 6y 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 6y 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
local____host
Browning of leaves, heat burn or pests?
Plants are showing signs of browning, and other weirds leaf markings, kind of grey-ish not too pronounced. It's been very hot and sunny here for 5 days, temps reaching above 37°. I left them in the sun during this period, is it heat stress? Otherwise growing nicely.
Leaves. Edges burnt
Leaves. Color · Dark-brown
6y ago
1
Solved
voidvine
Calcium excess, which led to potassium deficiency? Or just light burn? Or both? What's wrong with my girl? Please, help.
I've been giving her BioBizz in accordance with the schedule, including CalMag. Using tap water (250-300 ppm). So my only guess is calcium excess, which led to potassium deficiency. However, only the main cola is affected now. So I also suspect light burn. What's your opinion?
Week 8
Leaves. Edges burnt
Leaves. Tips · Burnt
Leaves. Curl down
5y ago
1
1
Solved
Amnezia
One of the Blue dream missing a side leaf ... should I be worried or will that leaf come after a while.
Week 1
Leaves. Edges burnt
7y ago
2
1
Solved
majklsoft
continuing nute burn or deficiency now? biobizz lightmix +organic nutes | runoffs EC 1.8-2.5 | PH 6.3 | DLI 45
cca 10d ago, I found early signs of overfertilization. I reduced nutes, but yellowing continued. After a flush 2d ago, things got worse (now also edges browning). I now suspect potassium deficiency or still nute burn. Next watering is near—should I flush again or feed properly?
Week 7
Leaves. Edges burnt
1y ago
5
6
Solved
Stolas2
Canoeing leaves and burnt ends
Canoeing and burnt tips of leaves. Temperature usually between 27 tp 29 degrees. Quite low humidity says 10% but not sure this is correct. Veg stage week 3 Any help greatly appreciated.
Leaves. Edges burnt
Leaves. Tips · Burnt
Leaves. Curl up
5y ago
3
Solved
Vril_Ya
Leaf burnt edges
Hi, I'm a first-time grower. Is this a sign of nitrogen deficiency in my Mimosa seedling?Thanks
Leaves. Edges burnt
Leaves. Tips · Burnt
3y ago
3
2
Solved
Donttellmywife
Is my soil too hot?
Leaves on skywalker autoflowers show some type of shock. Could it be shock from soil?
Week 2
Leaves. Edges burnt
5y ago
10
8
Solved
xtRaCorTx
Light, nute, wind or heat burn?
Im getting some browning on the serrated edges of the leaves, moreso on the upper fan leaves, but not on the sugar leaves, with some cupping of the upper leaves and the ones directly under the light are getting a lighter color overall. Any guesses? Light, nutes, wind or heat?
Week 9
Leaves. Edges burnt
6y ago
2
2
Solved
asdfghjkl404
Duda puntas quemadas o stress luminico
The tips of one of my plants are burning, but I don't know if it's due to light stress or excess fertilizers since I have All Mix... it only happens with 1 plant and a few leaves. It's worth noting that I used to have the light at 35cm. auto, 28 days,
Week 4
Leaves. Edges burnt
6y ago
7
5
Solved
seEdcork
Help! What is this?! Upper leaves turning yellow/brown but not the lower ones. Light burn?
Leaves. Edges burnt
Leaves. Color · Yellow
Leaves. Color · Dark-brown
3y ago
1
1
Solved
southerngrower2020
Leaf damage and flower analysis
Asking for thoughts on leaf damage. I think there may be nutrient shock so I will be reducing PPM to 800 to see if that helps. I am confused by other problems seen on a few leaves. I also want to ask if I am getting close to harvest (check flower pics) since this is an autoflower
Week 6
Leaves. Edges burnt
Leaves. Color · Yellow
Leaves. Other
7y ago
4
3
Solved
pinkdragon
Just to confirm, this looks like nute burn, doesn't it?
Burnt edges, tips curled up, canoeing. I've been having trouble balancing airflow and heat in such a small tent, and as a result the tent is on average about 28 degrees celcius daytime and the plants still get a lot of wind. Looking for whatever advice you can give! :)
Week 8
Leaves. Edges burnt
Leaves. Curl up
Leaves. Color · Mottling
6y ago
3
3
Solved
Jo3108
Mišljenje
I'm curious about your opinion, the plant is behind by about two weeks in my opinion, it looks healthy, but the leaves at the top are a bit burnt, I don't know if it's from the light or from the nutrients.
Leaves. Edges burnt
4y ago
1
3
Solved
EasyName
What is wrong?[light mix soil//water100ml 2drops calmag, 2.5ml agro vitality komplex(1.5%N,0.8%P,1.3%K)]
I used to water her with 6-10ml of water+nutes.But once she started slooping and her leafs drying out I stopped for a couple of days and added a fan(thinking it might be over watering).However she hasn't gotten better. Watered her today because leafs look pale, so added Nitrogen
Week 3
Leaves. Edges burnt
Leaves. Curl down
Plant. Wilting
4y ago
3
3
Solved
privateerjosh
Leaves Showing yellow edges and banding
Is yellowing of leaves and dark leaves toxicity? no curling . moved the lights further away. I'm growing organic. The plants look stunted short dense. I've only got a cheap pH meter calibrated. 🤞 use RO water pH- citric acid. Overall they are short dense growth wise
Week 4
Leaves. Edges burnt
Leaves. Veins · Yellow between
Plant. Too short
6y ago
2
2
Solved
Bimbadabang
Discoloration and burnt edges on leaves
Can someone please help me diagnose this problem? At first I thought it was root dry spots from the drip watering system but it’s gotten worse. The bottom leaves are yellowing and the edges are burnt with a hole in one of the leaves. Anything helps, thanks!
Leaves. Edges burnt
Leaves. Color · Yellow
6y ago
1
2
Solved
CannaTrope
Excess Nitrogen?
Hello growers. Are these plants receiving too much nitrogen? Very green leaves and slight burn. l am using the three part FloraSeries medium schedule 1/2 strength. I am going to switch to the light schedule 1/2 strength. Soil is 1/2 Happy Frog and 1/2 high porosity pro mix.
Week 4
Leaves. Edges burnt
5y ago
2
1
Solved
Dedarsleeve
Suggestions as to why this plant is a mess!
First grow - Blueberry Auto outdoor. Pathetic thing is on day 36 from direct sow. White splotches since week 2. Subjected to excessive heat, an oversized garden bed, lack of sunlight and overcompensating with supplemental grow lights. CoM organic nute/soil. Any solid diagnoses?
Leaves. Edges burnt
Plant. Too short
Setup. Outdoor
5y ago
1
1
Solved
Voogweed
Что это?
Potassium or calcium deficiency or something else? What do you think?
Week 6
Leaves. Edges burnt
6y ago
2
1
Solved
Randyb4
Nutrient lock out?
Well watered my plants with great value drinking water. Ph 4.11. Didn't check ph until week 3. Currently upping it to 6.5 after I found the issue. Does this look like nutrient lock out? They were in root Riot starter plugs. And I fed the some clonex and great white microbs.
Week 2
Leaves. Edges burnt
Leaves. Color · Yellow
Feeding. Other
5y ago
5
3