Back to Grow Questions

Grey leaves

herbalistsswordstarted grow question 6y ago

Noticed some leaves getting a brown grey colour. Any idea what this is? Seems to only affect leaves on one branch

herbalistssword

herbalistssword

Solved

Leaves. Color - Black or grey

likes

MangoDuduanswered grow question 6y ago

I think calcium deficiency next to the clorosis the leaf will start necrosis if is calcium def ✌️🏽

likes

Complain

Selected By The Grower

Similar Grow Questions

Solved

What leaf problem am I dealing with?FanLeaves are turning black from the inside to outside. It's looking like a starting problem. Please help me recognize this 🙂 first picture (leaf on the bottom shows it best)

Leaves. Color - Black or grey

5y ago

5

6

Solved

a black spot Suddenly, a very small black spot appeared on the leaves of the plant, very, very small. help！

Leaves. Color - Black or grey

4y ago

3

3

Solved

Week 2 flower.Buds turning black Buds and leaves under are turning black, any advice? Something to worry about?

Buds. Other

Leaves. Color - Black or grey

3y ago

3

2

Solved

Grey leaf tips Booth plants are showing some kinds of burn and I am not sure if it is nutrient burn or light burn or if there is something missing. Looks a bit like MG deficite but shouldn't the plant take that from the soil in that state and age?

Leaves. Color - Yellow

Leaves. Color - Black or grey

Feeding. Deficiences

2y ago

5

5

Solved

Nocturnalgardener

Calcium Deff im just wondering if you think this is a calcium deff?

Leaves. Tips - Burnt

Leaves. Color - Black or grey

5y ago

2

1

Solved

Leaf Deficiency What deficiency do you think this is?

Leaves. Color - Black or grey

6y ago

4

4

Solved

Is this a calmag problem?What problem do i have? Is it calmag? Help please. I grow in lightlix biobizz and with biobizz fertilizer

Leaves. Color - Black or grey

9mo ago

1

1

Solved

These three girls are all wilting and/or barely growing. I'd say over-watering except I've only been giving maybe a quart then waiting till the soil dries a little bit. Not too much tho. Could it be a nutrient problem already?

Leaves. Wilting

Leaves. Color - Black or grey

6y ago

4

6

Solved

Yellowing to slight grey leaves What's the cause of the older yellowing leaves with some grey and the slow spread to the newer growth? I'm between pH problems and or deficiency but not too sure.

Leaves. Color - Yellow

Leaves. Color - Black or grey

5y ago

3

3

Solved

Heat stress?Heat stress and can it be saved? Had to go away for a couple days. Hottest days of the summer mid 90's, full sun, but well watered. This is my first ever grow (auto & outdoor) and I expected about 1 week left until harvest. Thanks

Leaves. Color - Black or grey

4y ago

1

2

Solved

Cookie_monster12

What is this caused by? Spreading through mid leaves quite fast

Leaves. Color - Black or grey

5y ago

4

4

Solved

Seedlings (week3) lower leaves look yellow/dry Lower leaves look bad, some are yellow, some look dry and dead...

Leaves. Color - Yellow

Leaves. Color - Black or grey

6y ago

1

3

Solved

What deficiency it can be?what deficiency it can be? its start from upper fun leaves

Leaves. Color - Black or grey

6y ago

2

2

Solved

Black spots It's the last clon from that strain that I have (There are no longer seeds for sale) after saving her (She was in terrible conditions) she was growing great this last 5 days until yesterdays that I saw this black spots. PPM 670-PH 5.78-WaterT 68.7-AirT 71.6-PPFD 120-Humidity80%

Leaves. Curl up

Leaves. Color - Black or grey

2y ago

2

Solved

dark discolouration developing in flowering wk 3 howdy growbuds, noticing the pictured discolouration. hope someone w more experience/knowledge might recognise what's happening to my gals before it develops. advice/opinions welcome on if maybe nut burn/def, temp or ??? a heap more detail in entries to help diagnose. cheerz 🙏

Leaves. Color - Dark-brown

Leaves. Color - Black or grey

Feeding. Deficiences

6y ago

2

4

Solved

Dark leaves I am at the end of my grow and i spotted some dark areas on some leaves and sugarleaves. Beginning at the outside. Can someone tell me if its mold, or something i havn't to worry about?!? Thanks

Leaves. Color - Black or grey

2y ago

1

2

Solved

Cold or hot extraction for antioxidants?What preserves anthocyanins in our cannabis leaves better? If we want the antioxidant properties so we can use them for our benefit, which is better? Cold gentle extraction or use of heat? A traditional african practice centuries old makes tea from leaves to treat certain illness

Leaves. Color - Black or grey

6mo ago

4

3

Solved

Brown/Grey spots on the leaves Hey, I hope this is my last question for this grow :P I've noticed some brown/grey spots on the yellowing leaves, what could they be, deficiencies or sunburn? I'm still feeding the plant with nutes, but the next watering will be a flush, so I didn't expect discoloring before that

Leaves. Color - Yellow

Leaves. Color - Dark-brown

Leaves. Color - Black or grey

6y ago

1

1

Solved

Dark leaves, clawing So couple weeks ago my plant started turning into dark green colour . Using biobizz nutrients, using always 1/2 dosage, sometime even less in big pots. I though it was nitrogen toxicity. But not sure anymore. If anyone has idea what it could be? Using 0,5ml of their grow

Leaves. Color - Black or grey

2y ago

4

5

Solved

Black discolouration on leaves Okay so the problems with the black spots continue only on one plant. I tried reducing nitrogen and increased calmag to 4ml/g. I defoliated the affected leaves and sprayed with baking soda mix. 3 days later they're appearing again. If I don't get this fixed soon im gonna lose her

Leaves. Color - Black or grey

5y ago

2

3