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
yellow leaf, brown spots deficiency
jeffrey420
started grow question 3y ago
Can you guys help me identify this deficiency??
Solved
Week 9
Leaves. Veins - yellow between
Leaves. Color - Yellow
Leaves. Color - Pale
likes
Beans416
answered grow question 3y ago
Hey it looks like nitrogen deficiency. Buds are taking nitrogen from the leaves and not the soil. Hope this helps happy growing.
likes
Complain
Selected By The Grower
jeffrey420
answered grow question 3y ago
Could it mag deficiency?
1 like
Complain
StaresAtPlants
answered grow question 3y ago
Another thing to look at is where/what. Where/What leaves are affected. Old/bottom or new/top. My guess is N, P, and K, unless you have re potted recently.
1 like
Complain
ernest_twwg
answered grow question 3y ago
https://dutch-passion.com/en/blog/a-visual-guide-to-cannabis-deficiencies-n987
1 like
Complain
Similar Grow Questions
Solved
altoalto
Yellow Colour
Some leaves have been turning yellow. Especially the lower ones. I thought it was a nitrogen deficiency as I didn't give the plant any nutrients till 2 weeks ago. Now I am feeding her with Biobizz nutrients according to their table. Should I be worried? Any recommendations?
Week 11
Leaves. Color - Yellow
4y ago
2
2
Solved
QuiGonJib
Almost done
This is our first grow and we are in week 6 of bloom. Does anyone have an idea for the brother in the picture. He grew above the lights. We not sure how to handle it. Two leaves are to close to the light and turned yellow. Should we cut them away or leave them on it
Leaves. Color - Yellow
Setup. Lighting
4y ago
1
2
Solved
enthusiast_grower
yellow/copper appearance in some leaves after first run off watering
hi! after the first run off watering the girls seemed alright, sturdy and firm but some of the leaves (one leaf, 3 plants currently) experienced copper/yellow/orange tints . this is only on old leaves so looks like mobile nutrients. could this be cal-mag issues?
Week 3
Leaves. Color - Yellow
Leaves. Color - Red or pink
4y ago
3
3
Solved
Germano
Droppy Yellow Leaves in Flowering
Hey Growers,so in only 1 Day the lower Leaves got Yellow and Droppy ( you can see the last 3 pictures i added) Nut: BioBizz (Grow 2,Bloom 3,Max 1)ml Temp:( 19-23) Humidity: 39-46 i add one fan to the grow box, it is blowing wind in the stem area ( to get lower humidity) Thx :D
Week 8
Leaves. Dropping off
Leaves. Color - Yellow
6y ago
1
5
Solved
NIagaraFalls420
Light burn/moved to new tent
Having some issues with blueberry #3.. it got some pretty bad light burn before I could get it into my larger tent and the leaves have turned yellow and have been dying off. Also have spots forming on leaves. After moving to new tent no change. See last 4 pics week 9. Any ideas?
Week 9
Leaves. Tips - Burnt
Leaves. Color - Yellow
Plant. Wilting
6y ago
1
1
Solved
TeesTrees
Shall i cut the bottom leaves and stem?
Ive noticed today that the bottom leaves started to wilt and look kinda dead. Shall i cut them off at the stem and allow the rest of the plant to grow. I dont refer to colour much as im colourblind but i can see there lighter, very light green or yellow.
Leaves. Wilting
Leaves. Color - Yellow
4y ago
5
5
Solved
Ahtoh_mgrow
Deficiency
Spotted a deficiency on my AK 420 Checked on growweedeasy charts and Imo it's a cal/mag deficiency. I meticulously check Ph and runoff and she had the same treatment as my royal dwarf. Probably more hungry than the others. Just wanted to make sure, cal/mag deficiency right?
Week 6
Leaves. Color - Yellow
6y ago
1
1
Solved
Bendica
Ph ? Nut ? Not sure what it is on the excess/defiency chart. Details below
What kind of issue here? I think about the pH. -Soil : Light-Mix Biobizz (pH 5,5- 6,5) -Water pH : approximately 5.5 / 6 (initialy 7.4 and I read that is too high, I reduce him to 5.5/6) -Watering : 50ml every 2 or 3 days -Temp and humidity : 23 celsius degree and 44% -Pot : 11L
Leaves. Color - Yellow
5y ago
4
4
Solved
konopek
leaf problem
Bottom leafs turns yellow on 1 plant. Seems to me like lack of nitrogen?
Week 3
Leaves. Color - Yellow
6y ago
2
Solved
Thebakedape
Day 32 today noticed slight yellow tip on one of the leaves on 2 plants just started using bloom nutes using. 1/4 strength bio bizz organics with bio bizz all mix , is this the plant making its adjustment and normal or is this to do with nutrients problems thanks guys
Leaves. Color - Yellow
5y ago
1
1
Solved
DrBinoc
Magnesium or Nutrient Burn or?
Magnesium deficiency, or nutrient burn or??? Only on the lower leaves so far, curling down was existing genetics - but the burnt tips are new and some have even curled up now. Probably 5+ weeks left so too early for natural dying off?
Leaves. Tips - Burnt
Leaves. Color - Yellow
6y ago
5
4
Solved
damn_dorothea
Yellow leaf tips and edges
Yellow leaf tips and margins… what do you think? Nute burn? Light stress? Cold stress? Will this eventually resolve if I leave it alone and let it work itself out? (Which is what I’m inclined to do) Should I flush my plants or try some other intervention?
Week 8
Leaves. Color - Yellow
4y ago
2
4
Solved
BavarianBarbarian
Week 8 (4 weeks into flowering) - Possible Nitrogen / Cal-Mag issue?
Plants show signs of what i assume to be a deficiency. Stopped feeding nitrogen Week 7 according to schedule. Symptoms are not on every leaf but some the upper foliage. Yellowing, burnt tips and rusty spots. My guess is lack of Cal-Mag & Nitrogen. Is my guess correct?
Leaves. Tips - Burnt
Leaves. Curl up
Leaves. Color - Yellow
2y ago
3
3
Solved
PapaSmurf416
Two of my girls are taking long to flower and have light green leaves all over except for the oldest leaves which are dark and healthy color. Should I be worried or possibly just genetics?
Week 9
Leaves. Color - Pale
7y ago
1
1
Solved
kevzzz
Quickly yellowing leaves, stunted growth for 10 days
Ooph I need help again. My plants are starting to yellow –– quick. They were a bit pale about 12 hours ago, now they're totally yellow. I haven't watered in 3 days yet the soil is still damp (not wet), but about 30% perlite. Organic potting mix, no nutrients added. Water pH 6.5
Leaves. Color - Yellow
6y ago
3
4
Solved
SirBighead
Fading bottom leaves
Bottom leaves faded in color over the weekend and have started to turn yellowish. Is this a simple nutrient deficiency or something else I need to be concerned with?
Leaves. Color - Yellow
2y ago
1
2
Solved
Wackytabacky_420
Potassium or nitrogen?
So just since my update hours ago I'm noticing a decline in my pineapple auto. I have clawing tips, rust, and yellowing leaves. Happening at a rapid pace.
Week 6
Leaves. Curl down
Leaves. Color - Yellow
4y ago
4
6
Solved
spankyxvi
More or less ppm
My plant in week 4 of flowering are yellow from bottom up so I think it was nute deficiency sign but also they have slightly burnt at leaf tips on top. My last feed is 750ppm, grow in soil. My routine is feed every 3rd water(f/w/w/f) should I feed more often or same but more ppm
Week 8
Leaves. Tips - Burnt
Leaves. Color - Yellow
Setup. Strain - Autoflowering
3y ago
3
6
Solved
Jeremi420
Fertilizzato 2 volte di fila. Carenza o eccesso?
hi, biobizz light mix soil, third week of flowering, I doused twice in a row with nutrients. they looked hungry. today I am like that. does it seem shortage? bathroom with only h2o or nutrients? Thank you.
Week 7
Leaves. Color - Yellow
5y ago
1
4
Solved
ukterpdoc
Yellowing leaves whats up
Hello friends I'm in late flower buds frosted nicely trichomes not signalling ready for harvest yet and have not flushed. Some of the plants have yellowing on leaves can any please tell me whats up and am I OK?
Leaves. Color - Yellow
5y ago
2
1