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
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
likes
Organoman
answered grow question 3y ago
Burning from over feeding. Nothing to do with calcium. 18/6 is best for cannabis, they NEED sleep.
2 likes
Complain
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.
likes
Complain
ganzigunnu
answered grow question 3y ago
and shows slow growth compared to others.
likes
Complain
Similar Grow Questions
Solved
KiefDevil
End of leaves turning yellow after fimming (not so bad)
Hello guys, see the last picture, after my fimming, do you know if it's normal if the end of the leaves are turning yellow ? Or it is some stress ? (It's an auto) Thanks in advance ! 😀
Week 5
Leaves. Twisted
Leaves. Color - Yellow
Techniques. FIMing
5y ago
3
2
Solved
Noahbear
Seedling needs help
I have a auto-flower seedling that is only 12 days old from the taproot being planted. Her leaves are droopy and yellow in the center. Any ideas out there? Does she need nutes?
Leaves. Wilting
Leaves. Color - Yellow
4y ago
3
3
Solved
Dreamchvser
End of Flower, Yellow and crusty leaves ok ?
Hey last weeks of flower and I’m not sure if it’s fine how they are developing, as I started flushing this week they quickly started developing yellow crusty leaves. Should I keep flushing them as I will cut them in 1 or 2 weeks or should I try to balance out missing nutrients?
Leaves. Curl up
Leaves. Curl down
Leaves. Color - Yellow
2y ago
4
2
Solved
igglepuff
Anyone ideas to what may be causing the lower leaves to yellow and wilt? details; GG4 watered about 750ml/plant every other day alternating ph'd water/nuts (usually still damp 1st day). I over fed then nuts 2 feeds so starting a flush but is the dmg done?:<
Week 6
Leaves. Color - Yellow
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
3y ago
5
5
Solved
Frost
I’ve been using Biobizz AllMix and I fed her Advanced Nutrients Sensi Grow. Even tough flushed her twice, it has not stopped yet. Burned leaves symptom continues. Seems like it’s going worse.
Week 8
Leaves. Tips - Burnt
Leaves. Color - Dark-brown
Plant. Stem - Red or purple
5y ago
4
10
Solved
That70sDude
Yellow spots on leaves
My Lemon Haze 10 has had these yellow marks on the 2nd set of leaves, it has not spread... gave it a little Cal/Mag, but I was wondering if I should clip the two branches these leaves are on. Suggestions Please.
Week 5
Leaves. Color - Yellow
5y ago
2
Solved
Igrowneil
Help with nutes
Anyone recommend me continue with my GHE RIPEN or back to TRI PART and add the nitrogen and micro nutes back in until they finish or just ripen
Week 7
Buds. Other
Leaves. Color - Yellow
Feeding. Deficiences
5y ago
2
Solved
BadGrower
Lack of light or Cal-mag?
Some spotty leaves here at the base of the plant. The overall plant heath is fantastic and dense, haven’t done much defoliation so the bottom gets very little light. Is this a no light issue or calmag? I’m leaning towards calmag but the lower canopy gets very little. Advise?
Leaves. Color - Dark-brown
4y ago
1
3
Solved
munchiesart
Do you think this is a toxic condition, a Ph deficiency or a sign of deficiency?
My G13 showed signs of illness after my last watering. Day 105. I added İn my last irrigation 12ml Micro-6ml Grow-18ml Bloom-6ml Molasses-1.5ml Bloombastic-2ml B52 to 4 l. of water. I've kept the pH in the 6-6.5.(PPM1500) Please help me save this girl at once :( Thank you.
Leaves. Edges burnt
Leaves. Curl down
Leaves. Color - Dark-brown
4y ago
3
5
Solved
6ix6ix6ix
Yellow and burned top leaves
Fianal checkup. Inthink its too late anyway as we are so close to harvest but for the sake of gaining experience could anybody make the final diagnosis of what is the reason for the yellowing and burning tips of upper leaves. Untreated early PK def maybe?
Week 10
Leaves. Color - Yellow
3y ago
1
5
Solved
Septooth
Any idea what may be causing my leaves to look like this?
Can someone tell me what may be causing my leaves to look like this?
Week 10
Leaves. Color - Yellow
Leaves. Color - Red or pink
Leaves. Color - Pale
6y ago
3
2
Solved
JandM
Starting to yellow
So I had good growth up until 2 days ago when the one plant started to yellow. I had them going 24 hours a day and I got grow dots mixed in the bottom two thirds of the pots. Could this be light stress? or could it be hungry?
Leaves. Color - Yellow
1y ago
1
7
Solved
Dico29
Yellowing spots and holes in fan leaves
Is this leaf septoria? The bottom leaves are mostly infected. It has been raining heavily and some fan leaves were touching the bark on the pot. Thanks for any help!
Week 3
Leaves. Color - Yellow
6y ago
1
3
Solved
Khanos
yellowed leaves
On the 15th day, the lower leaves started to turn yellow, I'm worried. what should i do please help 😣
Week 3
Leaves. Color - Yellow
4y ago
5
5
Solved
Misanthrope
Leaf Discolouration in Flowering
5 weeks into flowering, grown outdoor in potted soil with regular nutrients. I've been spraying with Epsom salt sol'n once/twice per week for 3 weeks to treat what I thought was Mg def. Yellowing is starting now on upper leaves. Suggestions on what other steps to take?
Leaves. Color - Yellow
Feeding. Deficiences
4y ago
2
2
Solved
Oldmanbud__50
Help on cal diffcency
Hi can I use blood fish n bone to sort a calcium problem. In my plant.. Only on 1 fan leaf.. Doing this on a very low budget. Ty in advance
Week 2
Leaves. Color - Dark-brown
6y ago
1
1
Solved
clueless_smoker
Been flushing for the past week, the larger fan leaves are starting too turn yellow faster than I had anticipated but trich's haven't started turning amber yet. All the other sign's point towards her being about a week away from the chop but I'm a bit worried that I flushed early
Week 12
Leaves. Color - Yellow
Feeding. Other
4y ago
4
4
Solved
eltoto45
Do you think my plant is dying?
Do you think my plant is doing senescence or is it a problem with bugs or deficiency? If its senecence, do you think I need to stop feeding my plant and start flushing? I'm in 4-5 weeks of flowering and its an autoflower. Thanks
Leaves. Curl down
Leaves. Color - Yellow
5y ago
2
3
Solved
Floyd
Leaves discolouration
I have noticed that a couple of leaves on 2 of the plants are getting yellow spots, the only thing I’ve done differently was that I gave the only plain water without nutrients for 2 days, anyone knows what could it be ? Thanks
Week 7
Leaves. Color - Yellow
6y ago
1
3