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Back to Grow Questions
Leaves have brown spots
Flyalivebeats
started grow question 5y ago
Any idea what these brown spots could be?
Solved
Leaves. Color · Dark-brown
1 like
Roberts
answered grow question 5y ago
You are experiencing progressive potassium deficiency. Light nitrogen and heavy potassium are phosphorus in flowering. Good luck🌱
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Selected By The Grower
Coopmc
answered grow question 5y ago
You should find answered hear I sugest finding a feed scheadual and follow it
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Coopmc
answered grow question 5y ago
https://www.royalqueenseeds.com/blog-cannabis-nutrient-and-deficiency-table-n88
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Coopmc
answered grow question 5y ago
https://www.botanicare.com/faqs/can-i-foliar-spray-with-cal-mag-plus/
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Coopmc
answered grow question 5y ago
https://growace.com/blogs/learning-center/how-to-fix-nutrient-lockout
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Flyalivebeats
answered grow question 5y ago
So what should I do?
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Similar Grow Questions
Solved
Dylannthoo
Is 8 oz of water about right for 3 weeks old plants? Also thinking about LST, is it a good time to start that now? Also is buying nutrients worth it when it comes to harvest? Or is it more dependents on the power of the light ? Thank you for any advice 💯🙏🏼
Week 3
Leaves. Color · Dark-brown
7y ago
3
3
Solved
Mcnuffy
Spots on leaves, brown shimmering.
I've read that it's a boron deficiency, but I'd rather be sure.
Week 6
Leaves. Color · Dark-brown
Leaves. Color · Mottling
3y ago
2
1
Solved
Maggie_de_Block
Spots on leaves
Anyone know what's causing this? Slight discoloration and rust spots, mainly on older leaves. It's not that bad but quite spread out. did spray with neem oil recently, so is it just burn spots or a nutrient problem?
Week 6
Leaves. Color · Dark-brown
5y ago
2
Solved
Greenhorn101
Nitrogen burn?
A bit of delay getting the diary going! Started LST this week an give it some fertilizer after. Seems like it might have got a bit of nitrogen burn on some leaves? Might go back to the water!
Week 3
Leaves. Color · Dark-brown
6y ago
1
1
Solved
weefi
Brown leafes are extending
Week 7
Leaves. Curl up
Leaves. Color · Dark-brown
2y ago
6
6
Solved
InfinityStoner
Northern Light Brown leaves
Does someone knows where these brown discolorations come from? Thanks for Help
Week 3
Leaves. Color · Dark-brown
5y ago
2
Solved
TheNoobDude
Nutrient lockout, ph imbalance or nutrient burn?
Unfortunately I don't have a ph meter, so my best guess is one or more of these problems: nutrient lockout, ph imbalance or nutrient burn. The first 3 photos are from an Auto Northern Light and the last 2 are from an Auto Jack Herer.
Week 6
Leaves. Edges burnt
Leaves. Color · Yellow
Leaves. Color · Dark-brown
6y ago
1
1
Solved
GreenLiving
Browning leaves sections of leaf surface discoloured
Day 18 leaf worries, browning areas, slightly metallic shine. I think from reading it might possibly be a phosphorus deficiency but I’m not certain so though I’d ask for advice. Thank you for your time and all answers are appreciated. Have a great day!
Week 2
Leaves. Color · Dark-brown
5y ago
2
1
Solved
WulfBlud
Too much light or other deficiency
Too much light or some other deficiency? I’ve been having some issues with yellowing leaves and some other issues with browning and wilting/curling which I thought was initially nutrient lock but what I noticed is all four plants were not stunted and continued to grow normally.
Leaves. Color · Yellow
Leaves. Color · Dark-brown
Plant. Wilting
4y ago
4
Solved
TheNextGanjaMan
Pest attack. What can I use to eradicate?
3 weeks of flowering, and the pests are still here. Can I play Beauveria Bassiana? Or just neem oil? - The temperatures were very high here, exceeding 30°C, this week it will decrease. - I have other plants to harvest and I'm going to take advantage and clean the grow. Help 😥
Week 9
Leaves. Curl down
Leaves. Color · Dark-brown
Other. Bugs
3y ago
4
4
Solved
bekiffteridiot
Nutrient deficiency?
My plant is not doing good and I sadly don’t know what’s wrong with her. I would be very happy if someone could help me solve this. My tent is about 26-29 degrees at day and 24 at night. RH is 60%
Buds. Not fattening
Leaves. Curl down
Leaves. Color · Dark-brown
2y ago
1
1
Solved
Smokin_Joe
Discoloration and Spots
I'm still not sure if this is a deficiency or some sort of burn. It's definitely spreading a bit more, and I'm unsure if there's time left to address it in the grow. Video of full plant in week.
Week 18
Leaves. Edges burnt
Leaves. Color · Dark-purple
Leaves. Color · Dark-brown
6y ago
2
2
Solved
Chief_Leaf
Why are the leaves tips curling dying and brown marks appearing?
My Mac #1 showing brown spots/marks on leaves, with tips curling and dying yellow/brown - what is the problem? How do I fix this? She is in week 5 flower. Is it calcium deficiency? pH problem?
Leaves. Tips · Burnt
Leaves. Tips · Die
Leaves. Color · Dark-brown
2y ago
2
1
Solved
Kluless
Yellow brown leaves
Amateur HELP Baby looking very unwell. week 3. Leaves yellow / brown. Normal soil led light 60cm water 1L a day with nutrients.
Leaves. Color · Yellow
Leaves. Color · Dark-brown
6y ago
2
1
Solved
Accidental_Grower84
Orange spots on fan leaves
What are these spots due to? I was using pH 6.5 tap water and bud candy 1mL per L for every watering. Just water from now on. Should I worry? 2 weeks left before harvest
Week 10
Leaves. Color · Dark-brown
Feeding. Deficiencies
6y ago
3
3
Solved
Greenlady
What happend? I just started feeding them yesterday with this, but the others are just fine.. Did i burn it? What should i do?
Leaves. Color · Dark-brown
7y ago
4
Solved
OneBakedWalrus
HELP plant had massive overnight change
What happened to my friends girl? It was perfectly fine yesterday morning. This morning we checked her and all the hairs were brown and alot of the leaves were brown curled and crispy. Its been hot but to just change all at once is wierd. Some growth still pushing white hairs.
Buds. Other
Leaves. Curl up
Leaves. Color · Dark-brown
6y ago
3
2
Solved
Kripoulas
Deficiencies while in late flowering during flushing period
There is deficiency going on (looks like cal) she is an auto flowering strain in her 9th week and been flushed for a week now. Should I give her cal/mag and stop the flushing or is it too late to deal with that? She looks like she will be ready to chop in a week or so.
Leaves. Color · Dark-brown
Setup. Strain · Autoflowering
Feeding. Deficiencies
6y ago
4
2
Solved
Blabina
Help, my leaves are weird
One of my Northern is having an issue, what kind of efficiency is it ? Or what is it ?
Week 8
Leaves. Color · Dark-brown
5y ago
4
2
Solved
WeedBerry
Leaves are brown could this be calcium deficiency?
Hi growers Can anyone tell me what this means
Leaves. Color · Dark-brown
6y ago
1
1