The Grow Awards 2026 š 
Potassium Deficiency
The42started grow question 5y ago
Is this potassium deficiency? 21 days old from seed, no feed yet, ocean forest
Open
Leaves. Edges burnt
likes
Answer
smoke24answered grow question 5y ago
21 days old in OF soil, you won't have any deficiencies, OF runs hot, but the plants should grow into it, as long as you don't add too many additional nutrients. Happy growing.
likes
Complain
Similar Grow Questions
Solved
EnglishSwede
Nutrient burn or Deficiency?Can anyone help me diagnose whats going on here. Auto Amnesia Haze 4 weeks old, First Grow. Starting flowering soon so need help on Diagnoses and fix. Thanks everyoneLeaves. Edges burnt
Leaves. Color - Pale
5y ago
1
2
Solved
neros13
Flowering issuesFirst time! Everything perfect until 1st week flowering. After that started the issues. Is overfeeding, is hungry, to much water? The second week flowering I started Cal mag, alg a mic, bioheaven to help the situation. Before that only npk. Watering 1-2 per week4y ago
4
5
Solved
Pierrodelalune
Partially Dry leaves in grow phaseHello there,
What's wrong with my leaves, I have a few ones in my box, I m in Coco and in grow phaseLeaves. Edges burnt
Leaves. Curl up
Leaves. Twisted
2y ago
2
2
Solved
Newfie80
Burn on leavesI have been getting the same problem late in flower now as the last grow, not sure what Iām doing wrong. Always getting burn on leaves bad, only giving ph water to naturally flush a bit for last couple feedings, so Iām not giving nitrogen to plants only some bud candyWeek 11
Leaves. Edges burnt
5y ago
4
Solved
Leafy420
Was it to much?My plant looked okayish then i transplanted and topped the same day and this happend
( i think I was feeding too much calmag )
Changed the res now running at a ppm of 750 ph 5.8ish RO water on autopots
( oh and my cat ate the tips from 3 leafs X( ...)
Last pic is todayLeaves. Edges burnt
Leaves. Veins - yellow between
2y ago
3
4
Solved
borneopothead
DiagnosisDiagnosis? Is this nute burn or nitrogen toxicity?Week 5
Leaves. Edges burnt
5y ago
2
1
Solved
FlowerGrower
Problem with leaves. Yellowish spots and burnt edgesHi guys! It seems to be I have a small issue with one of my plants. On week 6 I spotted some of the leaves are not doing well. I always measure Ph level and keep it between 5,5 and 6. I give the same of nutrients to all 3 of them, but other two do not have it. What can it be?Leaves. Edges burnt
5y ago
1
1
Solved
SAC87
Yellowing again same as NS diary. Week 5, ph is good going in and in run off, recalibtared pen. lowered feedings to lower media salts. Could it be light burn 750w hps 22x22 air cooled hood 24ā away. Anybody ever use a diffuser? Or underfeeding? Would appreciate your thoughts.Week 14
Leaves. Edges burnt
7y ago
1
3
Solved
Stolas2
Yellowing and crisping leavesHi
Really need some help with pics below leaves are yellowing snd crisping. Not sure if it nute deficiency.Leaves. Edges burnt
Leaves. Color - Yellow
4y ago
1
Solved
Stunatic
Hello everyone, sorry to disturb but can anyone please help me identify what's wrong with my plants. I've included pictures, and if you need anymore details I am more than willing to share.Leaves. Edges burnt
Leaves. Dropping off
Leaves. Color - Dark-brown
1y ago
3
5
Solved
question_a_pig
Can you help identify the problem?Hey, I'm having a really weird action on the leaves of both plants in the tent
I'm having these rusty leaves starting from the lower ones on both plants in the tent (on of them affected much more severely).
Autopot(fabric pots)
Soil ~6,5pH
Reservoir ~6,3pH
ppf ~800
No bad smellLeaves. Edges burnt
Leaves. Curl down
2mo ago
2
5
Solved
Aw3sumpossum
I think I'm closer to week 7 of flower than I am 6, debating if I should flush.. The girls leaves are slowly burning down the sugar leaves closer to the bud, so I'm wondering if it's too early to flush.. Everything looks pretty good other than that, I think..Week 14
Leaves. Edges burnt
6y ago
1
2
Solved
Cannabisflakes
Burnt tips, yellowish color, cracking tipsSo guys, bottom leaves started with same symptoms a week ago; I belived that was due them touching the soil a few times during the LST (I'm getting medival on them š
, since I decided not to top them).
What do u guys think?
Aprecciate any help in advace ššā¤ļø3y ago
3
3
Solved
MyGrow
should I be worried?I have a problem identifying the cause.I notice that the lower leaves become dry, crunchy lose their color. But only the very last leaves at the bottom. I do not notice any problem towards the apex.
Does anyone have a lead please? An excess of P ?or K?Leaves. Edges burnt
Leaves. Tips - Burnt
5y ago
2
2
Solved
ExterminatorX
Sweet Zz stunted and funny colorage close to the middle.Plant problems for me, Some sort of stunted growth and dying new growth, what's the problem in your opinion? The middle leaf on the right in the picture is what I'm worrying aboutLeaves. Edges burnt
Leaves. Color - Mottling
Plant. Wilting
2y ago
5
4
