Check the winners The Grow Awards 2026 🏆
Start My Diary
Start My Diary
Log In
Start My Diary
Home
Diaries
Strains
Shorts
Questions
Contests
Growers
Seeds
Breeders
Nutrients
Equipment
Blog
English
Log In
Sign Up
Following
Follow
Brands
&
Growers
to get updates
Back to Grow Questions
Calcium Issue?
BeachGanja
started grow question 5y ago
Hey everyone, got some limited leaf issues on the older growth. Appears to be a calcium deficiency, but would like your thoughts. 😎
Solved
Week 5
Leaves. Color - Dark-brown
likes
Esoteric_growing
answered grow question 5y ago
Yeah agreed it looks like a calcium issue, also double check your ph as the light makes it hard to tell if it’s calcium or ph spotting.
1 like
Complain
Selected By The Grower
BeachGanja
answered grow question 5y ago
Added .5 tsp of CalMag - Bloom City on 11and 14 Jan - Removed 6 fan leaves, do not see any new leaves with spots.
likes
Complain
Roberts
answered grow question 5y ago
Check run off ph. I had same issue and was ph bottoming out in soil due to lack of proper run off. Not lack of proper nutrition . Good luck and happy growing 🌲🌲🌲👊
1 like
Complain
Similar Grow Questions
Solved
GoGscrash
What is wrong:/
please advise me what shortage or surplus could be
Leaves. Color - Dark-brown
4y ago
1
3
Solved
DomanAtrik
I just found a spot that is making me think bud rot. I so hope it's not true. Slight discoloration of pistols and leaves in a bud node. I added a picture in this weeks section. Please tell me it isnt bud rot.
Week 14
Leaves. Color - Dark-brown
7y ago
1
4
Solved
balansa
hey guys i have a question. i grew this girl on 400 HID now i bought viparspectra 450v because of the heat problem and electricity bills )) so will she suffer when i will switch the lights and can i help her somehow??? thanx bros )))
Week 8
Leaves. Color - Dark-brown
7y ago
1
1
Solved
Tonno
What is this?
Can someone explain to me what is this?
Leaves. Color - Dark-brown
5y ago
1
Solved
CannaKrops
Possible deficiency or calcium needed?
Please help me figure this out! Sour Kush Auto, 3 weeks. No nutes yet, Ocean Forest soil. Other 3 strains, same age, no problems. Bottom leaves showed signs first, then next set showed. Deficiency or soil to rich? Thanks all! Ph 6.5
Leaves. Color - Dark-brown
5y ago
2
2
Solved
Kmurr07
Too late for epsom salt spray?
Is it too late to use epsom salt as a foliar spray for my potential mag def? Also unsure of how much long I actually have until chop All plants were flipped the flower the same day on April 28.
Week 9
Leaves. Color - Dark-brown
3y ago
1
Solved
lovely_neighbours
Brown black spot crispy edges
I need help! Northern Light has Reddish brown spots turning dark-gray and crispy dark edges on the top leaves! It looks like a different issue from week 6 where gray spots appeared on the bottom leaves? Any ideas? Thanks
Week 8
Leaves. Edges burnt
Leaves. Color - Dark-brown
Leaves. Color - Black or grey
4y ago
2
2
Solved
OrionGrowgul
Was hat meine Pflanze?
Meine Lemon Cherry Cookies hat seit einiger Zeit braune Stellen auf den Blättern. Ich Dünge nach BioBizz Schema mit hälfte Grow da sie ja schon blüht. Gebe bei jedem Gießen auch 1ml/L CalMag hinzu, siehe Diary.
Leaves. Color - Dark-brown
10mo ago
1
Solved
sinasafari
Top growth issues
Transplanted outside more than a week ago and it was doing really good until this happened Any help would be appreciated.
Leaves. Color - Dark-brown
2y ago
3
2
Solved
Frost
What is this symptom?
Have a symptom of something that I could not understand. Started with yellow color from the edge of leaves, suddenly become a brown color and top of the leaves dried too fast like burned. Flushed them but it does not resolve.seems like magnesium def. but i am not sure, any ideas?
Week 6
Leaves. Tips - Die
Leaves. Color - Dark-brown
5y ago
5
4
Solved
EvilGrower
Calcium deficiency?
I recently bought Calimagic for my calcium fix. Prior to this week I have been using tap water for calcium. Is 2mL/gallon of calimagic too little? Noticed some leaf damage I believe to be calcium deficiency. Does she need more calmag? Thanks for your help all!
Week 8
Leaves. Color - Dark-brown
6y ago
2
4
Solved
Jake13255
Browning leaves? Did a soil slurry and dropped the water from 6.8 to 6.2. Does that mean it’s locking out? How should I go about fixing this? In peat pearlite and worm castings. Added about 6 cups of lime to the 20 gallons of soil thought that should have helped the ph?
Week 3
Leaves. Curl up
Leaves. Color - Yellow
Leaves. Color - Dark-brown
5y ago
1
Solved
xhibo
light stress of seedling
Light stress (image of 28.5.): is it likely that my plant will recover?
Week 1
Leaves. Color - Dark-brown
2y ago
4
3
Solved
TiRobotProds
Tâches brunâtre
Tache brunâtre sur les feuilles du bas de la plante qu'arrive-t-il a cette dame?
Leaves. Color - Dark-brown
5y ago
2
Solved
rosemary420
Is this a nutrient burn?
What should I do?
Leaves. Color - Dark-brown
6y ago
3
2
Solved
MrGrowthSpurt
Please Help me Help a Friend.
So a buddy of mine is growing outdoors, I'm growing indoors, we both are newbs, one of her plants is yellowing and decaying badly and she said she feeds 1 to 2 times a week rain water with no nutes and she doesn't ph the water. What could be the issue?
Leaves. Color - Yellow
Leaves. Color - Dark-brown
5y ago
4
4
Solved
Rafaelko
Which deficiency could that be?
Help me please to find out the deficiency of the Royal Gorilla Automatic 😳 4 Veg Week. Temperature 25-27 degrees RH 60-75 60% soil - 20% coco - 20% perlite Feeding Chart GHE FloraTrio pro 1 Gallon: 5ml CalMag 4 ml Micro 5ml Grow 1ml Bloom I did not spilt water on the leaves
Leaves. Color - Dark-brown
6y ago
1
1
Solved
Lapolda
Brown spots on the leaves
Hello, everyone. After replanting, this appeared on some of my flowers. I think it's probably stress after replanting, but I'd rather ask you more experienced ones. Thank you in advance for the advice 🙂
Leaves. Color - Dark-brown
4y ago
1
5
Solved
Smoking_Joe_Frazier
Nutrition deficiency or nute solution on leaves during watering?
Hi Growmies,during my monitoring routine I found some brown spots on the leaves. Not many but on some leaves the brown spots have become transparent and I can see through the leaves. Any ideas what could have caused the brown spots? Perhaps not enough CalMag? Rest looks healthy.
Week 6
Leaves. Color - Dark-brown
2y ago
4
3
Solved
Vitora
Yellow leaves - moby dick
The olders leaves started to die and to turn this yellow-brown color. I thought it could be the temperature (I am about to receive my temperature hydrometer to measure that), or over/less watering, or nutrients. The plant looked great a week before.
Week 4
Leaves. Color - Dark-brown
6y ago
2
3