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
What deficiency is this?
TheChronicHunter
started grow question 5y ago
Anyone know what deficiency I’m experiencing here? Zn or Mn maybe?
Solved
Week 10
Feeding. Deficiences
likes
HeavyHittah
answered grow question 5y ago
Are you flushing ? It's just the natural fade of the plant as it comes to the end of its cycle in flower. Nothing to worry about , it's just a lack of chlorophyll in the leaf as she fades out.
likes
Complain
Selected By The Grower
Don1daz
answered grow question 5y ago
Looks like molybdenum deficiency
likes
Complain
Similar Grow Questions
Solved
GronkLeague
Yellowing seedling
Just started giving dilute nutes to my seedling and it continues to yellow from bottom to top. Whats going on???
Week 3
Leaves. Color - Yellow
Plant. Other
Feeding. Deficiences
5y ago
2
2
Solved
Fruitgrower
Drainage issue
I'm not quite sure why this cup doesn't absorb its waterings when the other two solo cups are getting Watered every day. All 3 cups have no drainage. They are all grown in the same conditions. My first instinct is lack of drainage, do I need to make some holes, bottom or side?
Week 5
Feeding. Deficiences
5y ago
3
6
Solved
laberg
Possible toxicity or deficiency?
I saw this on one of my bottom leaves this morning. Hopefully someone can give insight of what it might be. I'm concerned that it is phosphorous deficiency. I didn't notice it a day ago, but I wasn't looking closely. 2 days ago I watered her (540 mL, 1/4 tsp nutrients). Thoughts?
Week 3
Leaves. Color - Yellow
Feeding. Deficiences
3y ago
5
5
Solved
RpX4630
Blocked plant
Hi. I have a problem, I think it's magnesium and calcium toxicity. I would appreciate any help. I have already washed the roots and I will see how it recovers. TKS
Feeding. Deficiences
5y ago
2
Solved
BrainStorm22
NEED HELP :(!
primera ves que veo este problema, solo e regado con cal mag de grotek y pocas veces con la base de vegetación de bac 1/4 de lo indicado por fabrica siempre con Ph 6.0 y Ec 600-800 pero los residuos marcan 1800-2800 ec y un Ph entre 4.0 y 5
Plant. Other
Feeding. Deficiences
Feeding. Other
5y ago
3
Solved
aDriftwoodKing
Seedling yellow tips
One of 4 seedlings has developed yellow tips. Leafs have been curled down since it sprouted. It's about a week old, FFOC soil w/Perlite, Mykos, 3 gal fabric pot. Have been watering until soil is damp using finger test, about a cup or 2 a day. Added 2 ml of silica boost yesterday
Leaves. Edges burnt
Leaves. Color - Yellow
Feeding. Deficiences
2y ago
1
1
Solved
WeedDude
What can causes the different color in the colas. Its the same Plant.
In the picture you can see the higher colas are light/yellowish green and the cola lower in the canopy are darker/healthier looking. more infos in my diary (1st grow) Thank you very much
Week 16
Buds. Other
Leaves. Color - Yellow
Feeding. Deficiences
4y ago
2
2
Solved
Marlboro
Very high ppm on exit
Hi. Today first time decide to put 3-4 L of water and look at ppm out. Some growers advise not even check it, but i did and here it is: Fresh water only. In - 48ppm; out -8000ppm. But she looks good. Temp 25; humidity 59% CO2 - 392ppm. Any advice or explanation? Thanks in advance
Week 3
Feeding. Deficiences
3y ago
1
4
Solved
CannaTrope
Calcium, lock out?
Hello, it looks like calcium, P, or K issues. Maybe pH lock out. I flushed last week and followed with nutes. Likely last nutes this week followed by a week or two of flushing before harvest. Please look at leaves and let me know what I should do as I end off this plant.
Week 7
Leaves. Color - Mottling
Feeding. Deficiences
4y ago
1
1
Solved
tiasmaaa
Magnesium Deficiency ? How can I fix it ?
got a little deficiency (maybe burned? but I think not). I'm pretty sure it's magnesium's deficiency, it happens after a flushing. I added 2 times the last 2 weeks a little bit of CalMag (BioBizz, but ive bought it 2 years ago, maybe it doesn't work well idk).
Leaves. Curl up
Leaves. Color - Yellow
Feeding. Deficiences
3y ago
5
5
Solved
Dillsnills
Still having trouble telling whether it's a deficiency or an excess of nutes, advice opinions greatly appreciated
Is this a deficiency or excess of Nutes ppm run off is at 1200 intake was 445, still having trouble w the difference between deficiency and excess, Girl Scout Cookie Auto week 5 flowering ph6.5-6.6. advice input opinions greatly appreciated.
Leaves. Tips - Burnt
Setup. Strain - Autoflowering
Feeding. Deficiences
5y ago
6
5
Solved
hempreport
PK
Prompt PK buster organic?
Week 7
Feeding. Deficiences
5y ago
1
2
Solved
ostrwahuio
Overfert?
I'm following the biobizz fertilizers schedule and watering the plant with 1/1,5 l every 4/5 days. Some tips of the leaves are yellow. Do I need to worry? How should I handle the situation?
Week 5
Feeding. Deficiences
5y ago
1
2
Solved
OneDropOfTHC
Ph too Alcaline! Help to naturally bring it down.
Guys my soil PH is at between 7.5-7.8, how do i bring it down? The water is at 7.1 and 7.5. Can i use vinegar to fix this? Should i water abundantly like flushing, with vinegar laced water? With what ph? 6.0? 5.0? Im measuring with liquid phenol red so range might be off a bit.
Feeding. Deficiences
5y ago
3
3
Solved
Mosherd7
Unknown rust on 7th flowering week
This started as what I thought was a cal/mag deficiency, bought some, gave it for a week at a good dose and 6.3ph, and this intensified and switched from just lower leaves to the upper and a few sugar leaves on one plant. Any ideas? May calmag takes awhile? Or wrong diagnosis?
Leaves. Color - Dark-brown
Feeding. Deficiences
6y ago
1
3
Solved
KINGT88
Living soil but I think my plant isn't getting enough nitrogen. Also is the plant budded ready or let it go 2 more weeks
So two different questions in one post one the leaves on my white widow are changing colors and I think it's because of low Nitrogen I'm not sure I'm have some Gaia Green I think ima try to use, I'm also using living soil so I try not to use to many extra chemicals it cause burn
Buds. Not fattening
Leaves. Color - Yellow
Feeding. Deficiences
3y ago
5
2
Solved
Hansgrube
Big FAIL try not to laugh - fed my ladies with WC cleaner
Try not to laugh. I accidentally fed one my ladies with a WC cleaner. https://ibb.co/v1MNNcM 1. I noticed it 45 min later, leaves began yellow tips 2. I took it off the dwc system and flushed it. Do you think shell survive, let her have few days in phd water or not?
Feeding. Chemical composition
Feeding. Deficiences
Feeding. Other
6y ago
7
8
Solved
prem895
Nitrogen?
Wondering if somebody out there can tell me if this is nitrogen deficiency or what Cinderella 99
Week 8
Feeding. Deficiences
5y ago
2
4
Solved
Lazuli
Who knows
Is this nute burn or some deficiency ? Lol
Feeding. Deficiences
3y ago
3
Solved
Overgrotho
Hot Soil
Is it true that hot (nutrient rich, in this case organic) soil can create nutrient lockout in seedlings? Next time I should only start in jiffy pellets or similar?
Week 1
Feeding. Deficiences
5y ago
4
3