The Grow Awards 2026 🏆 
Any ideas on this?
MOcaverstarted grow question 6y ago
I'm guessing this is some sort of deficiency. Some of the spots are rust like and occur and young and old leaves. Any opinions?
Advanced Nutrients 3 part. No supplements.
Solved
Leaves. Color - Mottling
likes
Buddieanswered grow question 6y ago
https://www.growweedeasy.com/cannabis-plant-problems/calcium-deficiency
Try looking here, hope it helps
likes
Complain
RastaMouseanswered grow question 6y ago
I agree calcium deficiency is most likely the problem. Calmag will solve the problem.
likes
Complain
Similar Grow Questions
Solved
scotch_egg
Calcium issues?Is this the start of a calcium deficiency? Aside from these couple of spots the plant looks healthy, but I really don't want this to progress. I can't measure my PH for a couple of days, sadly, until I get the equip through the post to do so.Leaves. Color - Mottling
5y ago
3
Solved
GardenSchool
Blotchy Leaves Problem - January 27 (Day 23)In the last 24-hours all three of my plants have started to show signs of blotchy/irregular colored leaves. When I touch the blotches they are crisp to the touch. I have a really cheap pH meter, and I've been feeding at 6.5 pH. Is this a pH issue?Week 3
Leaves. Color - Mottling
5y ago
4
4
Solved
Chr0nus
Spotted leavesPlant seems to be flowering ok but there are white spots on the leaves. What could it be. I also have a fruit fly problem.Leaves. Color - Mottling
1mo ago
1
2
Solved
dandaru
Hi i noticed some brown spots on some leafes and yellowing (please check pictures day 18)
what causes this? too hot or to little cal?
the last few days there was like 29-31°C in my box
also i added some nutes 2 days ago (1ml bio grow + 0.5ml bio heaven)
panicing a little hereWeek 3
Leaves. Color - Mottling
7y ago
1
2
Solved
SalgueiroGrower
K or Mg deficicienceHey guys, the problem of my baby is much worse and I need to treat this weekend... I did a lot of research and with the answer of the mates here I guess is K or Mg deficicience... I apologize for being repetitive, but I just want to make sure that I'll treat for the correct problWeek 5
Leaves. Color - Mottling
5y ago
2
6
Solved
TsultrimTarchin
Hi all. I'm a little concerned about the color and leaf structure if my baby green gelato auto from RQS. What trouble can cause that?Week 1
Leaves. Color - Mottling
5y ago
3
2
Solved
DrDank22
What might be going on with her? In Ocean Forest soil just water so far no nutes.Week 4
Leaves. Color - Mottling
7y ago
2
6
Solved
Kirsten
Copper colour, brittle dry patches, any idea what this is caused by?Does anyone know what this is caused by? I've had it on several plants in the past, as well.
I've looked it up, but nothing seems to fit. I'd appreciate your opinion.
It's on a few leaves, which is why I'd like to know. Thanks, I appreciate your help!! 💚Week 7
Leaves. Color - Mottling
6mo ago
6
4
Solved
daveHH
Dark spots on leavesOne of my girls got dark spots on her leaves. Is she ill, or is it too hot, or is the humidity too high? I gave them every second watering all those fertilizers 1ml/L. Could someone help please? I cant reduce the temp without this small climatizer (which is filled water) see picWeek 9
Leaves. Color - Mottling
3y ago
3
3
Solved
JohnD
Leaves are look sick.First set of /lower/ leaves are getting sick I presume, and surely gonna fall off. Definitely not looking ok to me, maybe they just age out?!? If anyone have a idea what's causing thins - please leave a comment. Thanks in advance!Week 5
Leaves. Color - Mottling
4y ago
4
2
Solved
Hongo
Orange/rust spots on leavesThroughout the life of this grow I've seen rust and orange spots on some of the fan leaves. I can't seem to figure out or pinpoint the source of this. I think the plants are in good health overall, I do have a lot of fungual gnats that I'm trying to mitigateWeek 8
Leaves. Color - Mottling
3y ago
2
2
Solved
Dante
There is some odd coloring going on with the leaves of plant 2. It is only affecting a few leaves in the middle of the plant. Any ideas?Week 7
Leaves. Color - Mottling
6y ago
1
Solved
Reefer_Chiefer1024
What kind of deficiency?Is this a magnesium deficiency or something else?Week 6
Leaves. Color - Mottling
4y ago
2
2
Solved
dmslotin
The problem is on the leaves. I can not understand what is happening?Week 4
Leaves. Color - Mottling
7y ago
3
3
Solved
Rando1314
Neuts lockout possibly??Gave them all haircuts then topped off w new soil in the pots on Sunday night. Watered w nutrients but then today they looked like this!! They’ve gotten progressively worse since Monday morning so I’m thinking possibly a nutrient lockout? I watered just now w flora-Kleen5y ago
1
1
Solved
Reefer_Chiefer1024
Leaves turning brown from center outAnyone know what is causing this on the leaves?Week 10
Leaves. Color - Mottling
4y ago
5