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
Deficiency
Hazeterpz
started grow question 4y ago
Het guys is this a calmag deficiency ? I’m in week 5 of veg didn’t add any calmag yet. Soil grown
Open
Leaves. Color - Yellow
likes
Answer
Targona
answered grow question 4y ago
As far as I know, Calmag is recommended for plants that we grow in a box under LED lighting :)
likes
Complain
HerbalEdu
answered grow question 4y ago
yeah this does look like first sign of magnesium deficiency: https://loudclouds.co/wp-content/uploads/2016/07/marijuana-deficiency-chart-jorge-cervantes.jpg
likes
Complain
Similar Grow Questions
Solved
JuanHaze_Arg
¿planta bloqueada?
Planta amarilla. Medición de escorrentía en 4.1 E.C (muy alta) No puedo hacer un lavado de raices con el triple de agua porque no puedo sacar el scrog. ¿el amarillamiento de la planta se debe a la EC elevada o a una quema por exceso en potencia lumínica ? Flower 42 de 75 días
Week 11
Leaves. Color - Yellow
5y ago
1
1
Solved
Finch
Color of leaves
How does she look? I think I see some spotting but idk could be paranoid
Leaves. Color - Yellow
6y ago
7
3
Solved
hollyhustler
Is that just a light burn or could it be something else?
One bud in the middle of my plant is much lighter than all the others, which all look healthy and green. I think it was due to the too small distance of my light, which was only 20cm (8") between canopy and light. I have now moved the light to 35cm (14"). What are your opinions?
Week 8
Leaves. Color - Yellow
Setup. Lighting
5y ago
4
3
Solved
GreenCasper
Slight yellowing
What do you guys think she needs? Is it anything I should worry about? Some photos are flash on/flash off
Leaves. Color - Yellow
5y ago
1
1
Solved
Xavierfourtwenty
So plants are looking good except for the Blueberry Autoflower, the leaves are twisting & overlapping & most are turning yellow, I know yellow usually means nitrogen deficiency but it shouldn't be with the nutrients it's receiving, anyone have any ideas or suggestions?
Week 4
Leaves. Color - Yellow
4y ago
6
3
Solved
ChronicFinest
I started to worry a bit. My gorgeous plant starts to yellow from the bottom. I don't know if that's normal. I expect another 4 weeks of flowering actually. I hope it won't rot on me :( Any help or tips are welcome ...
Week 12
Leaves. Color - Yellow
7y ago
1
1
Solved
cropduster
Lower leaves turning pale/yellow/brown
For the past four weeks the lower fan leaves on my plant have been getting pale green then yellow/brown. the stems have turned purple and I have noticed the last week or so the tips of the leaves have been slowly turning brown. Should i worry at this stage of growth?
Week 13
Leaves. Color - Yellow
4y ago
5
4
Solved
legal_grower
YELLOW LEAF TIPS
Leaves. Veins - yellow between
Leaves. Color - Yellow
2y ago
1
1
Solved
gamberro
Yellowing lower leaves in early flower
Week 4
Leaves. Color - Yellow
3mo ago
3
Solved
tiasmaaa
calcium / magnesium deficiency ?
The top leaves turn yellow on the tips, and the new leaves look a bit weird, like curled up ... I thought of calcium / magnesium deficiency. You confirm ?
Week 6
Leaves. Curl down
Leaves. Color - Yellow
Plant. Too short
5y ago
2
2
Solved
towellie
Tips turning into yellow
We started feeding the plants 10 days ago. Some leave tips started to turn yellow, we think is due nutrient burn. We decided to water them without ferts for once, to flush out the excess nutrients. Is it a good approach? Could it be from light stress? (See pic for reference)
Week 3
Leaves. Tips - Burnt
Leaves. Color - Yellow
3y ago
2
2
Solved
Fishcake
Could anyone help me fix this
I've been feeding at 6.4 3ml per l grow 1.5 ml per l cal mag iand just 1 ml per l bloom as I was going to flower in the coming week
Week 9
Leaves. Color - Yellow
Leaves. Color - Dark-brown
5y ago
4
2
Solved
ganzigunnu
deficiency?
hi folks, is this calmag deficiency or what? its week 7. i always added 0.2 ec calmag to the solution. why im getting this now? maybe i need more of it. its only in one of the plants.
Week 7
Leaves. Color - Yellow
Feeding. Deficiences
3y ago
2
3
Solved
Greenhousegrow
I’ve got a little greenhouse grow (I think this is a seedsman lemon auto), but haven’t been able to give the plants as much love as I would have liked this year. I’m a bit worried about this one, any advice would be greatly appreciated if anything could be salvaged?! Thanks
Leaves. Color - Yellow
4y ago
2
3
Solved
Slowgrow179
Nutrient issues or some other problem?
This is my second grow. I’m experiencing tiny brown spots on leaves with yellowing of leaves it is a Seedsman nl auto.
Leaves. Color - Yellow
Leaves. Color - Dark-brown
3y ago
4
4
Solved
InkedPhoenix420
Is she too far gone?
Plant is 8 weeks old. Noticed yellowing of leaves and burned looking tips so start treating with cal mag but she doesn’t seem to be getting better. Do I carry on or give up on her?
Leaves. Color - Yellow
Plant. Stem - Red or purple
4y ago
1
2
Solved
Mnbuds
leaf diseases
Yellow and brown spots with leaves curling up, have flushed a bunch and got ppm and ph adjusted right and move my light back up so my PAR is around 950. Any help would be appreciated?
Week 7
Leaves. Curl up
Leaves. Color - Yellow
2y ago
3
3
Solved
tavaresf
Yellowing and brown spots on leaves
Can anyone identify why this is happening? I am growing 2 other plants (one the same strain) with identical treatment and this started happening with one of my Royal Jacks. Everyday new leafs show the same symptoms.
Week 6
Leaves. Color - Yellow
Leaves. Color - Dark-brown
5y ago
2
2
Solved
PeppaWutz
Lightburn, nuteburn or deficencie?
I saw some strange brown spots on yellowing leave tips of the upper leave pairs. Is this lightburn or nutrient burn or a deficencie? One plant of 9 is effected. The others look fine. Thanks for your help 😋🖖
Week 10
Leaves. Color - Yellow
Leaves. Other
5y ago
3
2
Solved
OnBudNem
Is my plant missing some nutrients?!?
Is there any deficiency in my plants nutes? This particular plant has greenish yellow fan leaves, and i want to make sure I’m not missing anything. Does anyone know what this might be?
Leaves. Color - Yellow
Plant. Other
3y ago
1