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Back to Grow Questions
is it cal def?
ganzigunnu
started grow question 3y ago
all identical environment only single plant do this. I gave plain water.
Solved
Week 4
Leaves. Color - Yellow
Leaves. Color - Dark-brown
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Organoman
answered grow question 3y ago
Burning from over feeding. Nothing to do with calcium. 18/6 is best for cannabis, they NEED sleep.
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Selected By The Grower
ganzigunnu
answered grow question 3y ago
i fed only plain water. i give low ppfd first month 24h than 18/6. my ppfd so far doesnt exceed 15-20 dli. i make it to stabilize room temperature.
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ganzigunnu
answered grow question 3y ago
and shows slow growth compared to others.
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Similar Grow Questions
Solved
Misanthrope
Strange yellow patches
This is a new one for me, sont think I've ever seen discolouration like this before. My first thought was having left some nute solution on her leaves after feeding but pretty sure I've ruled that out and more leaves have begun to show the same discoloring. Any advice appreciated
Week 12
Leaves. Color - Yellow
4y ago
2
5
Solved
Kirky
Yellow fan leafs
Yellow dry fan leafs well into flower ( week 17 from seed ) is this normal ?
Leaves. Color - Yellow
3y ago
1
5
Solved
FatalFarmer
Brown spots on one seedling
I noticed some small brown spots forming on one of my plants leaves, not sure what it is, maybe early sign of cal deficiency? The other plant looks nearly identical with out these spots, any advice helps although it could be too soon to tell what it is...
Week 2
Leaves. Color - Dark-brown
6y ago
3
3
Solved
EJBudz
Yellowing leaves with brown spots close to harvest
Is this yellowing normal as I approach harvest or is this something I should have been taking care of? If it is how could I?
Leaves. Color - Yellow
Other. General questions
3y ago
1
2
Solved
Cannabis_carlitos
Cal-mag issue that won't go away
I keep getting a cal-mag deficiency. I have been using 1ml per liter of water - 4ml roughly per gallon. It is only 1 plant, the same which has had the same cal-mag issue since early veg. I include cal-mag every watering and nutrient feed day. You can see images for reference
Week 9
Leaves. Color - Dark-brown
4y ago
2
3
Solved
Fasty
One plant (the one on the right) is going yellow, with brown mottling on the leaves. Both plants have been treated exactly the same. I’m giving the plant some calmag and extra nutrition after flushing it (which had no effect). Any ideas to save this plant? Worried…
Leaves. Color - Yellow
Leaves. Color - Mottling
2y ago
1
3
Solved
Lil_Teddy
what cause it,Is it normal?
Week 7
Leaves. Color - Yellow
Leaves. Color - Dark-brown
Leaves. Color - Black or grey
6y ago
2
5
Solved
odrex
What would be the cause of bronzed/rust spots on leaves?
Dual strain pheno hunt. One strain is experiencing bronzed/rust spots. What could be the cause? No pests/eggs to see. Assuming deficiency Soil: Gaia Green Living Soil amending with 3 TBSP/g 4-4-4, 25% worm castings and 4 TBSP/g wollastonite Water: 80 mL daily
Leaves. Color - Dark-brown
3y ago
1
2
Solved
Betagemini
Hi Guys I need some advice pleas to stop yellowing all the leafs on the plant. I started feeding her with 40ml of Biocanna Flores per 10l of water 3-4times per week and 2 weeks later a I added 100g of guano. Do you thing it is Potassium (K) defeciency? or it is toomuchPhosphorus?
Week 23
Leaves. Color - Yellow
7y ago
6
3
Solved
elevensixty6
Deficiency?? Excess? Neither?
Grown this strain before and had the same issue.. not sure if its a CalMag deficiency entirely. pH has remained at 6.0-6.5 or so in soil and didnt show signs until recently, seemed to have worsened after just two days of only CalMag and Ro water so I bumped up the bloom nutes.
Week 5
Leaves. Color - Dark-brown
Feeding. Deficiences
5y ago
3
3
Solved
Kanabas
Yellow leaf tips
What can be causing this yellow tips, hydrophonic, ppm around 400 hp 6.7
Leaves. Color - Yellow
4y ago
3
2
Solved
Horosho
Small yellow stains
Hello colleagues! Would you kindly help me and tell what these yellow stains may be caused by? I think I could set the ph-level too low, so it may be a deficiency of some nutrients, but the plant seems developing normally.
Leaves. Color - Yellow
4y ago
1
3
Solved
heythere12345
How does it look? Should i be worried about the yellowing leaves? Day 53 speed devil auto#2
Leaves. Color - Yellow
5y ago
1
5
Solved
CaptainGary
Is it this or that?
My best guess is Overfeeding.. I sat down to try nut it out, but I only guess. What is the deal here folks?
Week 11
Leaves. Color - Yellow
6y ago
3
2
Solved
LetsGrooow
Seedlings yellow and showing spots
Picture of just the leaf is 11 days old. Thought maybe I was over watering it and I've only been watered it twice in a week about a cup each. spots are on it now. Temps have been mid 70s and humidty mid 60s. Picture of the smaller plant is about a week younger than other plant.
Week 2
Leaves. Color - Yellow
Leaves. Color - Pale
5y ago
5
Solved
The_Big_Legrowski91
Is this a CalMag deficiency?
It started with White Widow a few days ago, showing signs of yellow leaf tips. I'm quite sure I'm not overwatering. Are they overfed (nutrient burn)? I use plain water and applied Zamnesia Monster Bud Mix (Pellets) to the soil before the grow. Scared for my first harvest.
Week 4
Leaves. Color - Yellow
4y ago
7
7
Solved
Sejanus21
Leaves of young plant are becoming yellow
The leaves of my four week old Stress Killer are becoming yellow from the outside to the inside. I am a total beginner and I read that this may be overwatering, underwatering, overfeeding, underfeeding, so I am confused.
Week 4
Leaves. Color - Yellow
3y ago
3
2
Solved
AlpineGoat
First time HESI soil
What’s happening to my girls? It’s the first time for me with minerals, currently using the HESI Soil Pack. Maaybe I’m putting a little too much SuperVit. Both autos, SweetZZ in 15L and Amnesia Lemon in 5L pot. Yellow fan leafs, red stem, lil weak.. Look at the pic and tell me :)
Week 8
Leaves. Color - Yellow
Plant. Stem - Red or purple
5y ago
2
2
Solved
Deejay_scuff
Yellowing leaves week 6 of flower
One of my plants leaves are rapidly yellowing in week 6 of flower. The others are all still green. Is this something I should be concerned with and if so how do I remedy this so late in flower
Leaves. Color - Yellow
5y ago
1
4
Solved
Ixnay
Yellow leaves with dark spots
Old leaves going yellow with black spots that fall off with the slightest touch.. They are the lower growth that hasnt really been exposed to much light. Any ideas what could this be and how to fix it? A bit worried about losing 3 months work 😑 Thanks in advance!
Leaves. Color - Yellow
6y ago
1
2