The Grow Awards 2026 🏆

Back to Grow Questions

Leaves dying...

Flamingo21started grow question 5y ago

(Not from my diary, asking for a friend, thank you) Hi guys, need some help please. What can cause this problem on the leaves? I'm using foxfarm soil (ocean forest) Ph range 6.5-6.7 Cal mag 4 ml /gallon

Flamingo21

Flamingo21

Solved

Leaves. Color - Dark-brown

likes

dr_Thompsonanswered grow question 5y ago

looks like a phosphorus or potassium deficiency at an early stage

1 like

Complain

Selected By The Grower

Organomananswered grow question 5y ago

Asking for a friend eh? But you are using fox farm ocean forest soil eh? Anyway, it does look like a bit like a calcium deficiency. Some cal/mag will help, but the affected leaves won't bounce back to normal health. Once damaged, they stay damaged, but all the new growth will be fine. Hope this helps, Organoman.

1 like

Complain

Similar Grow Questions

Solved

Phosphor mangel?Phosphor Mangel? Habe 2 Blätter die so

Leaves. Color - Dark-brown

Feeding. Deficiences

2y ago

1

1

Solved

Dark spots on leaves Hey guys, some leaves have these black spots, what do you I'm facing here? Thanks

Leaves. Color - Dark-brown

Leaves. Other

5y ago

1

Solved

leaves with brown spots hi guys, do you know what these stains could be? Can you give me some advice please?

Leaves. Color - Dark-brown

2y ago

1

1

Solved

what do you guys think this is ?Hi Guys Sorry to keep bothering you all but please see the pics the leaves are curling downwards and going this colour. temps are high at the moment but seems like an overfeed to me. Curruntly flushing with just 5.8 water for 5 days then will re introduce feed.

Leaves. Color - Dark-brown

6y ago

1

7

Solved

Need help, Not too sure what going on with the leaves I have this Neville haze growing. Recently I gave it calmag, and the leaves seems to not like it. Giving out light brown patches, looks almost like rust. Today the serrated tips of the leaves is turning brown. Any idea what seems to be the problem?

Leaves. Tips - Burnt

Leaves. Color - Dark-brown

4y ago

3

1

Solved

Too late for epsom salt spray?Is it too late to use epsom salt as a foliar spray for my potential mag def? Also unsure of how much long I actually have until chop All plants were flipped the flower the same day on April 28.

Leaves. Color - Dark-brown

3y ago

2

Solved

What is this symptom?Have a symptom of something that I could not understand. Started with yellow color from the edge of leaves, suddenly become a brown color and top of the leaves dried too fast like burned. Flushed them but it does not resolve.seems like magnesium def. but i am not sure, any ideas?

Leaves. Tips - Die

Leaves. Color - Dark-brown

5y ago

5

4

Solved

Brown spots and yellowing What do you think this is? Nutrients deficiency or maybe soil ph. Happened overnight and the plants are a little dry but I just gave them water and nutrients. My ph tester has been broken so I’ve sorta been winging it with some ph strips.

Leaves. Color - Yellow

Leaves. Color - Dark-brown

6mo ago

2

4

Solved

I water with 50% distilled and 50% rain OR 50% distilled and 50% tap. I have fed once with Grow Big and it happened right after. Might have rubbed nozzle on the underside of the leaves. I water every 2-3 days and water until drop of runoff appears in tray. How much runoff?

Leaves. Color - Dark-brown

5y ago

6

5

Solved

Brown spots leaves what do you think , 4 weeks old , is in Plagron bath mix .. I gave her 1x 2ml alga grow and 0.1ml rootbastic . she is in a 11l pot .. am worried about the brown spots ??

Leaves. Color - Dark-brown

4y ago

1

1

Solved

No se porque se torno amarilla ec esta normal y ph también. Luz se subio para prevenir quema.

Leaves. Curl up

Leaves. Color - Yellow

Leaves. Color - Dark-brown

4y ago

2

2

Solved

Brown Spots on Leafs, veg and flowering, CalMag Def or overfert?Hi, I have been running 2 Sensi Skunk Autos and 2 Sensi Tang Sugar with 43 days. Soil is All Mix and Nutes from the BioBizz line. 9l pots and watering every 2-3 day with 1l water. Ferts every watering like this: 1l - 1,0ml BioGro/1,8 BBloom/2,0 ActiVera/1,0 Top Max/1,0 CalMag Thx

Leaves. Color - Dark-brown

1y ago

3

1

Solved

what are those spots on the leaves, they appeared last week. I try to rinse the root with 2 L of pH 6.7 of water without nutrients, but it seems to continue

Leaves. Color - Yellow

Leaves. Color - Dark-brown

6y ago

2

1

Solved

Calcium deficiency?Hello Everyone. The Fan leaves at the top and Middle have brown spots, I use RO water and feed with Fox Farm Tiger Bloom..Everytime I feed or Water I have been adding 5 ml of Cal Mag Ph 6.4 feeds right at 900ppm . NL auto week 4 flower. Thanks in advance. Wash your hands 👍

Leaves. Color - Yellow

Leaves. Color - Dark-brown

6y ago

1

1

Solved

CollectiveSol123

How can I fatten my buds up..new LEDs soon..that will help..

Leaves. Color - Dark-brown

6y ago

1

1

Solved

Weird leave color sad looking leaves What does that colour on the leaves mean? Also does it look like overwatered? I watered today 1L after 3 days of not watering and pot was light

Leaves. Color - Dark-brown

Plant. Wilting

4y ago

1

1

Solved

I water my plants everyday , however I have mixed my nutrients “ph perfect grow, micro, and bloom” in with my water only the appropriate amount given on the bottle. Should I be using water with the nutrients everytime I water or switch it up with plain water as well?

Leaves. Color - Dark-brown

7y ago

2

1

Solved

My runtz are drooling since the beginning i am growing on coco watering once every 4-5 days on this picture i haven’t given water for 3-4-5 days I have a repost its a update My runoff is 7800 EC pH 5,66 but i gave it 1200 my last watering i am gonna flush

Leaves. Curl down

Leaves. Twisted

Leaves. Color - Dark-brown

5y ago

2

2

Solved

Brown spots on seedling What are the Brown spots on my seedling? I did not put mist or water on her.

Leaves. Color - Dark-brown

Setup. Seedling

4y ago

3

4

Solved

Burned upper leaf edges Hi! Dark spots appeared on some upper leaves overnight. I don't think this is the cause, but I did a pretty heavy defoliation the day before. the spots only affects leaf margins and makes the tips curl up. The spots are brown, burned and slightly purplish. what could this be?

Leaves. Color - Dark-brown

5y ago

2