The Grow Awards 2026 🏆

Back to Grow Questions

rust?

Dodgersstarted grow question 5y ago

if you know what this is and how to get rid of it, let me know thanks!

Dodgers

Dodgers

Dodgers

Open

Leaves. Color - Mottling

likes

Answer

Chow_13answered grow question 5y ago

First and third picture look like ph fluctuations (most likely went to low) not sure what the second yellowing is from

likes

Complain

2020Groweranswered grow question 5y ago

Hey, to me it looks like you sprayed your plants with something during when the lights are on. If so, you should never spray plants with lights on, always have it off. Nutrients burn leaves under the light.

likes

Complain

Similar Grow Questions

Solved

Brown spots on lower leaves Long and short of it is that I'm wondering what's going on with these brown spots on Tiamat. The solution pH has been dropping rapidly, even though the PPM has only very slightly raised (250 - 275 over the past 3 days, whereas pH has shot down from 6.2 to 5.8).

Leaves. Color - Mottling

Other. General questions

6y ago

1

3

Solved

Why does my bottom leaf have brownish white tip and is cripsy?Was checking leaf temps all over and at the very bottom first 3 point fan leaf that she ever grew I noticed the center leaf crispy at the tip with some light green spots around it. The only other leaves that look like this are the single first true leaves. Thoughts?

Leaves. Tips - Burnt

Leaves. Color - Pale

Leaves. Color - Mottling

3y ago

2

3

Solved

Hojas manchas marron las hojas de mis plantan han comenzado a tener manchas, me han dicho que les rocíe con jabón potásico y aceite de neem en las noches, pero cada vez avanza mas. será falta de nutrientes? algún hongo ? o quemaduras en las hojas por potasio ?

Leaves. Color - Dark-brown

Leaves. Color - Mottling

5y ago

2

1

Solved

need a little help. noticed a little discoloration lately on a few of the leaves on the plants. pretty sparse and the plants seem overall very healthy. what is this? lol pics above

Leaves. Color - Mottling

6y ago

2

2

Solved

Weird Leaf Color Does anyone have any input on these leaves color and shape? There are 2 of these plants and this is the only one doing it. I have seen a few gnats around this plant in particular but not sure if that is the issue?

Leaves. Color - Mottling

Other. Bugs

4y ago

3

4

Solved

Is it infected?Is it infected, like mildew, or has it just some nutrient problems in the beginning? And the leaves form is just the genetic i guess?

Leaves. Color - Mottling

2y ago

5

Solved

Nute Burn?So, been growing these 4 girls, 13 weeks now. Everything for all of them are the same. Plant n#1 started to show some signs of burn leaves and curling down. Any ideas of what could be?

Leaves. Curl down

Leaves. Color - Mottling

Feeding. Other

5y ago

1

1

Solved

Potassium?Got a bit of an issue starting to show up on some leaves. Only on one plant.Could it be potassium?

Leaves. Color - Mottling

3y ago

1

3

Solved

Brown spots on all three plants At first just one plant showed some deficit-symptoms (mottling/brown spots), but now all three are really getting worse! Ph of feeding is always okay (6.3-6.7) , yet the runoff shows 7.0-7.1. Ec in is always around 1.3. Runoff shows 1.5.... Today I added a little bit of cal/mg...

Leaves. Color - Mottling

5y ago

2

Solved

ReginaldJohnstonX3

Horrible deficiency took over all the leaves this week. Any one have any ideas?

Leaves. Color - Mottling

6y ago

3

3

Solved

HeartStrong_Garden

Leaf coloration Why are the leaves so discolored?

Leaves. Color - Mottling

3y ago

6

5

Solved

What's wrong?!Can anyone tell me what's going on with this? Leaves are getting white markings and are fairly limp to the touch (although they are not drooping). I've checked underneath and there are no signs of any bugs... nothing flying through the air... All other plants are ok!

Leaves. Color - Mottling

4y ago

1

3

Solved

Leaves damage: PH levels from nutes?Chemical question: growing 3 autos since 3 weeks, last 2 days had symptoms of deficiency after adding 1ml/L of Calmag, BioHeaven and B'cuzz root stimulator, soil is Kilomix which has PH 5.7, tap water has PH 8.1, is it possible that nutes made PH that acid/basic to hurt plant?

Leaves. Color - Mottling

Feeding. Deficiences

6y ago

1

1

Solved

What causes these colour smears Jack Herer outdoors. None of my grows have presented a colour smear on the leaves, as this example shows. Left & Right of my hand shows 2 leaves with a colour smear on them. Any ideas or recommendations? Thanks Gang !!

Leaves. Color - Mottling

5y ago

2

2

Solved

One plant (the one on the right) is going yellow, with brown mottling on the leaves. Both plants have been treated exactly the same. I’m giving the plant some calmag and extra nutrition after flushing it (which had no effect). Any ideas to save this plant? Worried…

Leaves. Color - Yellow

Leaves. Color - Mottling

2y ago

1

3

Solved

Spots and yellowing I am getting a few spots and yellowing is that bad? The one is Girl Scout Cookies. She has been the runt and finicky the entire time so far critical is the biggest plant and getting a few spots too. They have had yellow Tipps the entire time. This is my second grow

Leaves. Color - Mottling

5y ago

1

3

Solved

Spotty/Blotchy Discoloration on leaf.What is this spotty/blotchy discoloration on this leaf? None of the other plants have it, it didn't brush off when rubbed. Hoping it isn't a mold or a pest...I have been keeping the humidity around 65% with good airflow, but I'm wondering if it's time to bring it down to 60%.

Leaves. Color - Mottling

4y ago

1

2

Solved

Can i please get some input from my fellow growers.Hello my fellow growers. i woke up today and went to see my lady's (4 x critical orange punch autoflower). and i saw a problem with my leaves, they are looking sick. i hope someone can help me with this issue cause i dont want to lose my beatifull lady's.

Leaves. Color - Mottling

3y ago

11

5

Solved

Im thinking this is a CAL - MAG deficiency ( first grow please correct me if I'm wrong 😜 ).. growing organically.. should i add Epsom Salts now considering the plant should be done in approx 2 weeks?

Leaves. Color - Mottling

7y ago

2

2

Solved

Mottled yellow leaves?Why is the bottom leaf going mottled yellow?

Leaves. Color - Mottling

6y ago

3

1