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
Weird Spots
BongRip
started grow question 5y ago
Hello! Does anybody know what these spots are? It's on some of my low fan leaves. What is the issue and how do I solve it? please help! 🤡
Open
Leaves. Color - Mottling
likes
Answer
MedicalCannabisCultivation
answered grow question 5y ago
I guess it is low phosphorus levels. As I can see the spots are on the lower leaves & the leaf stems are a bit reddish. Hope you could solve it in the meantime. Here is a good reference chart: https://i.redd.it/qhrj8qmjl7az.jpg
likes
Complain
Similar Grow Questions
Solved
HeartStrong_Garden
Leaf coloration
Why are the leaves so discolored?
Week 7
Leaves. Color - Mottling
3y ago
6
5
Solved
DudeGrowsWeed
Kill, Fuck, Marry? She's almost 8 weeks old growing really slow. Still has the same odd coloring on leaves. Tried defoliating the most affected leaves. But no improvement. Should I kill her and cut my losses? Say fuck it and leave her grow? Or marry and try new solutions?
Week 7
Leaves. Color - Mottling
8y ago
3
4
Solved
HomeGrown33
Brown Spots on Leaves
I’m noticing some light brown spots on my leaves. After researching it seems that it was either 1) Manganese deficiency 2) calcium deficiency or 3) overwatering. I don’t think I’m overwatering. It could be the nutrients but would like input!
Leaves. Color - Dark-brown
Leaves. Color - Mottling
2y ago
5
3
Solved
bSandersWitASteelChair
Leaf Spots, weak color, and leaf ripple
Please help me identify possible causes of this: small spots on leaves, minor color fade (not burn) along edges, and strange 'ripple' effect. A user commented that he thought my plants looked deficient but hasn't elaborated further yet. What might this be? Multiple issues?
Week 5
Leaves. Color - Mottling
Feeding. Deficiences
Techniques. LST
5y ago
1
3
Solved
MansionMarijuana
One of the leaves has brown spots. Any ideas? Bugs or calcium deficiency maybe? Thanks in advance! Let's get these babies healthy!
Week 2
Leaves. Color - Mottling
7y ago
3
3
Solved
Mabaluc
Leaves have some spots
My auto flower has started presenting some spots, it's on week 3. But I've seen these marks since the beginning of week 2, been measuring my ph and everything looks fine. Maybe the super soil is a bit too strong, and it has to get used to it? The lamp is 27 inches away.
Leaves. Color - Mottling
5y ago
1
1
Solved
taprootArmy
Why do my plants only have that light greenish yellowish look at the top and why is one of my plants also having those sick leaves at the bottom?
2 of my 3 plants are a bit yellow-ish at the top since about a week. Plant 1 also had a couple of sick leaves at the bottom that I did remove. Those leaves had brown/dark spots, felt dry like paper, had very purple stems and did smell more like hay. More info in my report.
Week 6
Leaves. Wilting
Leaves. Color - Yellow
Leaves. Color - Mottling
2y ago
5
3
Solved
John_Federic
Is this septoria or alternaria? The plant is doing well, buds are not affected (at least not now) so I hope it’s septoria. Few weeks till flowering complete, do you think I can carry on with it? Please tell me it’s septoria and not alternaria. Thanks to anyone that will respond
Leaves. Color - Mottling
3y ago
2
5
Solved
bobo66
what are these white spots on the upper leaves?(Skunk 1Fem Sensi Seed ,Plagron Alga Nutries)
I only see such white spots on the tops of a few plants,The plants have been flowering for 21 days they are beautiful anyway, i don't see much trouble, i just haven't seen such white spots on the top of the plant yet, the lamp is high enough and the temperature is perfect. SKUNK1
Leaves. Color - Pale
Leaves. Color - Mottling
4y ago
6
9
Solved
NarwhalUp
So at day 55 I'm noticing that some of my leaf tips are looking a bit burnt and some rust colored spots are showing up on the leaves. I read that this might a deficiency of cal or mag or a ph issue. Just wondering if any one could help my diagnose this issue and try to fix it.
Week 8
Leaves. Color - Mottling
7y ago
2
1
Solved
Jobbie
I'll just leave this here.
Only a few leaves, but should I be worried? Last few waters have only had calmag to see if that helps.
Week 10
Leaves. Color - Yellow
Leaves. Color - Mottling
4y ago
1
1
Solved
Gottajiboo
Discoloration???
Noticing slight discoloration on Gelato, running in living soil, does this still have something to do with a nutrient deficiency? Has anyone encountered something like this?
Week 3
Leaves. Color - Mottling
3y ago
6
6
Solved
Fullmeltalchemist
Am I correct in diagnosing this as Calcium deficiency in the Black Sugar? I gave a basic compost tea yesterday. What else can I do to ensure she makes it through harvest?
Week 12
Leaves. Color - Mottling
7y ago
3
3
Solved
Cheeba_Inu
There is a little bit of minor yellowing/browning in spots, on a few fan and sugar leafs. The plants otherwise seem healthy. Is this a normal part of this stage of flowering, or should I be concerned about nutrient issues? Thanks!
Week 7
Leaves. Color - Mottling
6y ago
6
3
Solved
Kwczekus
Nutrients??
Nutrients suggestions. Why are they showing some problems already? Why are the stems purple?
Leaves. Color - Mottling
3y ago
2
3
Solved
MicroPlant
Brown dots
White Widow Auto RQS 9 weeks old Third grow. My plant started making brown spots one week ago. Today, the problem continues. I feed my plant with Pelargon Terra Bloom, sometimes add Pelargon PK13-14. I don't control ph level, but previous two plants don't have this problem.
Leaves. Color - Mottling
5y ago
1
3
Solved
Hermes88
nutritional excess or nutritional deficiency ( could it be excess of nitrogen)
Hello growers, I need some help with my little plant. I have three plants one of them it's all right but the other one has a problem, I don't know if the problem is nutritional excess or nutritional deficiency. I use Alg-A-Mix
Leaves. Color - Mottling
3y ago
1
4
Solved
NMGDOC
Bugs, spiders or fungus?
Hi everyone, what should i do with this in floration? Neem oil? Soap? Im starting the 9 week and i think that if i use neem oil now, it will leave some taste on the buds. I touched some leaves and the white marks stay, it isn't powder, but is white. Thank you 💚
Leaves. White powder
Leaves. Color - Mottling
Leaves. Other
5y ago
3
4
Solved
Greenpoodle
Nutrient issue
I think i have a nutrient issue. Any ideas on what it could possibly be? All appearing on older fan leaves. New growth seems fine so far
Week 13
Leaves. Color - Mottling
3y ago
4
4
Solved
flowerbudder
Do my girls look healthy? There's small lighter green patches here and there and some leaf curl. I might be a over analyzing/reacting. I'm a little paranoid but autos supposed to be finicky and stunt easily, and can go from bad to worse very quickly, from everything I've read.Thx
Week 3
Leaves. Color - Mottling
7y ago
2
2