Back to Grow Questions

Black spots on leaves

Trickotreat47started grow question 2y ago

So I have those black spots on leaves on top of the canopy of my plants. Can someone please explain what are those and how can I treat it? Also the edges of the leaves on top of the canopy are brown and crispy.

Trickotreat47

Trickotreat47

Trickotreat47

Trickotreat47

Trickotreat47

Trickotreat47

Trickotreat47

Trickotreat47

Solved

Leaves. Color - Dark-brown

likes

Organomananswered grow question 2y ago

The burnt tips are a nutrition/pH issue. The black blotches could be a fungal problem due to poor air exchange/high humidity.

1 like

Complain

Selected By The Grower

Similar Grow Questions

Solved

HELP!!!Help! What is the problem

Leaves. Color - Dark-brown

5y ago

1

2

Solved

Deficiency?I need help recognizing a deficiency. i think it is cal mag, but it seems strange it has quite heavy nutrition. the pH of the earth is 6.20. i'm at 7 weeks and it also seems a bit slow in flowering. what can i do?

Leaves. Color - Dark-brown

Leaves. Color - Mottling

5y ago

4

4

Solved

Hojas se amarillean o queman bordes Desde hace unos dias noto que las hojas de la planta se amarillean o se ponen como en la foto no se si puede ser algun tipo de carencia o falta de alimento ya que no la di mas desde la ultima vez y a cogido un color mas claro

Leaves. Tips - Die

Leaves. Color - Yellow

Leaves. Color - Dark-brown

5y ago

2

2

Solved

Any Idea's on the issue?Found a brownish mark on a couple of big fan leafs, I'm assuming its a nutrient problem but not sure any help would appreciated. Thank you. 100w LED Bio Grow 2ml/L

Leaves. Color - Dark-brown

5y ago

1

1

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

Some pistols turning brown. It's the 4th week, seems a bit early to me. Some idea?

Leaves. Color - Dark-brown

7y ago

10

4

Solved

browning sugar leaves, 9th week of flower I have some browning sugar leaves, I missed some watering last weekend and think this might be the issue. This should be my last week of flower is this something to worry about?

Buds. Other

Leaves. Color - Dark-brown

6y ago

1

1

Solved

Brown dark spots on fan leaf Any clue what this is? It only appeared on 1 of the plants and only on 1 of the fan leaves. The brown color has kind of a metallic shine to it. My guess is that it’s a Cal. def. I also suspect it might be a Phosphorus def. as the plants turned dark green the last few days.

Leaves. Color - Dark-brown

6y ago

2

2

Solved

NoFaceNoName461

Leaves problem at end stage Hi Guys, Once agiam I need your help, I’m at almost the end of the stage of Green gelato auto, And suddenly the top leaves started first to get kind of Bronze colour and now it’s even getting worst, What’s should I do and what might be the problem?

Leaves. Color - Dark-brown

4y ago

3

3

Solved

Should I remove parts of leaves ?I suppose it's a something like overwatering + lamp stress. My lamp is now something like 80cm away. And I hvn't watered for 1 wk (but soil still wet, so... I wait ?). => Should I remove parts of leaves ? What about leaves with center dots? Previous question for more info, Thx

Leaves. Color - Yellow

Leaves. Color - Dark-brown

Feeding. Other

4y ago

1

2

Solved

Hey all my grow is near complete and I am dying to try it!! I was just wondering if anyone takes theirs with the trichomes the way mine are and am I looking at them right to determine they are almost ready through my eyes lik

Leaves. Color - Dark-brown

7y ago

1

2

Solved

Calcium deficiency?Saw this little brown/yellow parts today. She is in BioBizz LightMix Soil and gets 0.3ml/L BioBizz CalMag 3x per week. pH is above 6.5 . Today I gave her 1ml/L CalMag. Was this the right choice? Is this a calcium deficiency?

Leaves. Color - Dark-brown

Feeding. Deficiences

3y ago

2

2

Solved

SLuGGeRNauT_420

Now wtf Now with is wrong too much cal mag I didn’t have time to veg the small plants longer the older plants vegged for 2-3 months I had to flip so I have a bunch of smaller plants over night the leaves dried and crispy

Leaves. Color - Dark-brown

5y ago

4

5

Solved

Leaves turn brown all of a sudden What could these brown parts mean? They show up randomly, also on lower leaves, so couldn’t be the light being too close? Thanks!

Leaves. Color - Dark-brown

5y ago

1

3

Solved

Suffering seedlings Seed 1 is suffering and both plants probably stunted. Should I let these dry up then give a full dose (canna schedule) of coco ab and some cal mag?? Thanks in advance 👍

Leaves. Color - Dark-brown

6y ago

5

4

Solved

Happy_Rakosnicek

Many or low nutrients?Hello Growers What could it be? I thought it would be a nutrient deficiency (EC-1.0) so I picked up the nutrients to EC-1.4, but it's getting worse. Do you think they'd have a lot of nutrients?

Leaves. Color - Dark-brown

5y ago

1

1

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

7y ago

1

Solved

Hi guys my special queen has got brown leaves and they look like they're getting worse. It pretty close to harvest so I don't want it to die at this stage. It's my first grow so any tips or advice is appreciated. Thanks

Leaves. Color - Dark-brown

6y ago

1

Solved

Spotting issue consistent in all my grows. Have always thought Cal deficient but more Cal never fixes the issue. PH always checked with 2 PH pens 6.2-6.8.Always pops up around the same time in flower.. week 4/5. Brown irregular spots and occasional curling down on the fan leaves. The only things I have consistently used in all the grows is the LED light, RO water, and CALiMAGic. Switched to dry organics but now its back. N toxic?

Leaves. Curl down

Leaves. Color - Dark-brown

Leaves. Other

4y ago

7

6

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