The Grow Awards 2026 🏆

Back to Grow Questions

Folhas pontos de ferrugem

Diariesweedstarted grow question 5y ago

Alguém sabe dizer oque se passa??

Diariesweed

Solved

Leaves. Color - Dark-brown

likes

deeunit1answered grow question 5y ago

9 times out of 10 this is due to lack of Calcium.

likes

Complain

Selected By The Grower

Mr_Weeds_Autosanswered grow question 5y ago

There's no doubt in my mind that this is a Calcium Deficiency, which can easily be fixed with a dose of Cal-Mag, but the damaged leaves aren't going to get better so you might want to remove them.

likes

Complain

Similar Grow Questions

Solved

HomeGrown_Medicinal

Brown, curling leaves?I have no idea what's happening here but the girls are showing some kind of deficiency. Browning, curling leaves. I have two 100w led lights above them and I use an organic dry fertilizer, I recently brewed a compost tea to try to get nutrients to them

Leaves. Curl down

Leaves. Color - Dark-brown

3y ago

6

6

Solved

Brown spots on autos. Halfway thru week 5. Also, stretching rlly bad, under same conditions Brown spots? It's on the plant on the left. Both the same strain, and autos, but I topped the one on the left. Its been growing too quickly tbh and just wanted to try to have an even canopy. Been feeding them fox farms veg nutes. About to switch. Dose her with cal mag maybe?

Leaves. Color - Dark-brown

Plant. Too tall

Plant. Spaces between nodes

4y ago

2

2

Solved

Rusty brown spotting on upper fan leaves, too much Tiger Bloom or deficiency?Hindu auto, week 11 started seeing rusty brown spotting on upper fan leaves. At this point I was only using tap water and 4 tsp/gal of tiger bloom. That is aggressive so I backed off to 1.5 tsp. I watered with cal mag 1 tsp just in case it was deficient. Ideas? Buds seem ok.

Leaves. Color - Dark-brown

4y ago

3

3

Solved

Plant seems to be slowly dying My plant started to go backwards and I can’t get it revived, anyone has any idea what it could be?

Leaves. Color - Dark-brown

5y ago

2

2

Solved

Cal mag ? Or just normal fall colors appearing ?Noticed this one just one of my plants of of 3 they are all fed the same and watered the same what could it be ?

Leaves. Color - Dark-brown

5y ago

6

Solved

GoldenWeedGrower

Brown tips and edge Hi guys, can you please tell me if the signals on the leafs are normal in this stage or if I should be worried about ? Many Thanks 🙏

Leaves. Curl up

Leaves. Color - Dark-brown

3y ago

4

2

Solved

Started some deficiency with two plants I think the leaf going up is light stress, and the other yellowimg is n deficiency way too much food but I could use a 2nd pair of eyes on this

Leaves. Color - Dark-brown

6y ago

1

Solved

новые листья желтеют, а на старых появится пятна и опускаются кончики Возникли жёлтые полоски на новых листочках и коричневые пятна на старых. Но цветок в целом не выглядит больным (возраст 3 недели)

Leaves. Color - Yellow

Leaves. Color - Dark-brown

5y ago

1

1

Solved

Brown dying leaves What is going on with my leaves? Even the sugar leaves are starting to die. Sprayed with optic foliar switch to prevent male flowers popping up a few weeks ago so could be that.

Leaves. Tips - Die

Leaves. Color - Dark-brown

Feeding. Deficiences

5y ago

4

3

Solved

Possible P Deficiency?Hey everyone, hope all is well. I noticed these past few days some dark spots appearing on some of my higher leaves. From what I’ve read it looks like it could be a Phosphorus deficiency. Any ideas? It’s on two out of three plants of the same strain. All same feeding schedule.

Leaves. Color - Dark-brown

3y ago

1

2

Solved

Possible lockout, what could've caused it, all 3 get the same water & feeding Hey, i'm new as grower and really glad about any tipps I got some rusty spots + pale looking, tested the runoff and need help reconstructing on what went wrong IN: 2l Osmosis + 0,6ml calmag + ph down 7 - 6,5 -Ph: 6,5 -ec: 540 OUT: ca 200ml -Ph: 5 -ec: 630

Leaves. Color - Dark-brown

Setup. Strain - Autoflowering

Feeding. Deficiences

1y ago

5

4

Solved

Feuilles jaune et marron!Bonjour, j'aurai voulu savoir si vous saviez ce qui arrive à me plantes. Une d'entre elle se décolore, elle perds son vert qui jaunis. Et l'autre à beaucoup de mal à pousser, et ses pointes deviennent marron. Les feuilles se lève aussi. Merci beaucoup pour votre réponse.

Leaves. Color - Yellow

Leaves. Color - Pale

Leaves. Color - Dark-brown

3y ago

1

3

Solved

Help! Lower fan leaves drying out slowly at the tips and edges. Doesn't look like nitrogen deficiency to me, but please prove me wrong!10 days ago the lower set of leaves started drying out (they get brown not yellow). They don't receive light, but now it's already started showing on the third set of leaves. Does it look like nitrogen deficiency or can it be something else? Just gave it full strength nutes.

Leaves. Edges burnt

Leaves. Tips - Die

Leaves. Color - Dark-brown

5y ago

2

2

Solved

One of the plants doesn't look so good, looks like is related Cal/Mag deficiency but I added it after 10 days from seed so not sure if I had to add more or is something else. Any clue about it?

Leaves. Color - Yellow

Leaves. Color - Dark-brown

5y ago

3

Solved

Persistent markings spreading on leaves The problem came back to this seedling with brown markings on leaves which has spread to 2nd set and slowly spreading the whole leaves. Ph runoff is stable 6.1 so is ppm. Idk whatelse to do to help. Been putting cinnamon on top coco too. Ppm in is 340ppm. Any advise please.

Leaves. Color - Dark-brown

5y ago

4

5

Solved

Browning of leaves, heat burn or pests?Plants are showing signs of browning, and other weirds leaf markings, kind of grey-ish not too pronounced. It's been very hot and sunny here for 5 days, temps reaching above 37°. I left them in the sun during this period, is it heat stress? Otherwise growing nicely.

Leaves. Edges burnt

Leaves. Color - Dark-brown

5y ago

1

Solved

Brown dots on leaves Leaves I really dont know whats going on... Something is wrong. It looks like leafs are burned by over feeding, but i only used mycorhiza. Does anyone know what happend? Or any advice how i can fix it?

Leaves. Color - Dark-brown

6y ago

2

1

Solved

Nitrogen Deficiency or Nutrient Lockout?My plants are showing red / purple stems as well as some rust spots in some of the older leaves. Nitrogen deficiency? Or lockout due to too much fertilizer?

Leaves. Color - Pale

Leaves. Color - Dark-brown

1y ago

3

3

Solved

Brown spots Had issues with this plant since day 9- it collapsed so have added support It's now around 2 weeks old and is developing a brownish colour with some clear spots Please see pictures for a better description

Leaves. Color - Dark-brown

5y ago

3

3

Solved

Thankfully not my plant but what do you think this deficiency is? My first thought was actually that one plant fungus r something that causes brown circle like spots. This is the top of the plant. No curling to leaves.

Leaves. Color - Dark-brown

4y ago

2