The Grow Awards 2026 🏆

Back to Grow Questions

White spots on leaves

Duggsterstarted grow question 5y ago

What do these white spots mean and how should I deal with them?

Duggster

Solved

Leaves. Other

likes

TimTheTerpMananswered grow question 5y ago

Probably thrip damage. Get a Cold Pressed Neem oil and make a water / oil / soap solution to coat and protect your plant with. Just stop using about 3-4 before harvest to help with taste. 👊

2 likes

Complain

Selected By The Grower

Similar Grow Questions

Solved

Will plants with Nitrogen toxicity go back to normal green color after they recover.Will plants that have turned dark green with clawed leaves from nitrogen toxicity turn back to a normal green color and the leaves straighten out or will it stay like this? I flushed her Jan 2 and watered her again on 1/9. She hasn't started growing yet and still dark clawed

Leaves. Other

5y ago

3

4

Solved

Does it looks like overlighting or overwatering Hey, guys! My bubble kush auto doesn’t look good. And I’m not quite sure what is wrong? please take a look at the photo and kindly comment on this;) 80wt lamp about 40 cm above the plant. Temperature is 25-26 degrees. Humidity - 70%. 0,2 liter of water per day. it is 10 days old

Leaves. Twisted

Leaves. Other

4y ago

1

1

Solved

Pest or some nutrients deficiency?Hi beautiful people. What would you say about those tiny holes in the leaves? Pest, if yes, which kind (visually, I see nothing) and how could I treat it while the plant is already flowering? Some kind of nutrient deficiency? Thanks in advance for your help 🙂

Leaves. Other

5y ago

1

1

Solved

Defective leaves The new stems have defective leaves. Before topping everything was fine. She had normal leaves. After topping, most of the new growth have defective, wavy, some claw like leaves.

Leaves. Curl down

Leaves. Other

5y ago

3

Solved

Inside of seed stuck on cotyledon leaves keeping them together Has anyone ever had the inside of the seed stay on and keep the two cotyledon leaves together? The outer hard shell has come off. I've been spraying it to try and soak it off but it's quite hard. Anyone ever successfully deal with this or will it just pop off on its own?

Leaves. Other

Setup. Seeds

Germination. Substrate

4y ago

2

2

Solved

Brown spot on leaf Hey guys, everything was going great until this brown spot came up. Still very new at Diagnosing deficiency just wanted to see what everyone’s thoughts on this were. I did a foliar superthrive spray yesterday. Day before that was their first half dose of nutrients thanks. In soil

Leaves. Other

3y ago

2

6

Solved

No Leaves There are no leaves on my 5 days plants

Leaves. Other

5y ago

2

1

Solved

Weird thing on one leave Hello, I just see that the seed was not fully removed from the little plant yesterday, so I just removed it carefully but there's something weird on the leave where the seed was stuck, can you tell me what is it? Is it bad?

Leaves. Other

5y ago

2

1

Solved

Necrotic spots The last day or two I’ve had a bunch of necrotic spots pop up on the lower 3 sets of fan leaves. She is at node #5 now and starting to put out pistils. Is this phosphorus deficiency? I changed the res as it was close to a week anyways. Thanks all for the help. Happy Growing!

Leaves. Edges burnt

Leaves. Curl up

Leaves. Other

5y ago

1

Solved

Exceso o Deficiencia de calcio? DWC Buenas tardes colegas, espero me puedan ayudar con este problema, toda la informacion detallada en los comentarios.

Leaves. Other

5y ago

2

Solved

Gnants?Hello growers, the gnants have appeared, can it be due to them or is the problem caused by some lack of nourishment?

Leaves. Other

3y ago

6

6

Solved

yellow/brown spots on lower leaves Hi, 2 of 8 got yellow/brown spots on lower leaves. I've watered them once a week and add calmag, pH=6,2 following b.a.c. instructions. Last watering, i forgot calmag so I did a second watering 5 days later with calmag. What could be the problem ?

Leaves. Other

Feeding. Deficiences

2y ago

2

2

Solved

GrowersParadise

Rust spots on lower leaves rust spots on lower leaves on mainly one strain, started at tip of leaf. Happened after res change and had PH swings during that time until it was adjusted/settled. Full EC again. PH swing? Maybe cal(or)mag issue? PH is back at 5.9 now, running bennies. Maybe Slightly droopy? Thx

Leaves. Other

4y ago

1

3

Solved

What are these leaves saying?What do you think these symptoms are saying? PH was low for a couple feedings before this photo (4.9-5.4), could that explain this? The coco doesn’t stay too moist so I don’t think it’s overwatering. Could it be underwatering? I do have roots trying to get out the drain hole now

Leaves. Other

5y ago

1

1

Solved

Patches on leaves. Any help or advise much appreciate.New here and new to the industry. Just wondering what these patches are on my leaves please. TIA

Leaves. Other

4y ago

1

1

Solved

What kind of excess/deficiency is that?She is now on day 16. It showed up today when I watered with 1ml of calmag, 0.5ml of fish-mix and 1ml of bio-heaven. Any info or advices would be great, thanks!

Leaves. Tips - Burnt

Leaves. Color - Dark-brown

Leaves. Other

5y ago

2

1

Solved

Folded leaves.Why are these leaves folded up so much? And so droopy? I'm a bit confused!

Leaves. Other

6y ago

2

2

Solved

Trimming sugar leaves One of my plants seem to have much bigger/more sugar leaves than the other. Im not sure how much to trimm off after harvest to have a smooth smoke

Leaves. Other

Other. Harvest - Smoking

3y ago

2

3

Solved

Slight brown spots Started to notice some very early signs of a deficiency, or possibly nutrient burn, any suggestions at to what it could be. Have been noticing some very slightly curled down tips.

Leaves. Other

4y ago

1

1

Solved

Leaf edges pointing up, why is this tho? Rh: 65% temps: 22.5°Celcius Fan blowing over them. Phlizon 1000w both switches on at 27 inches from the top. Also dark spots appearing in the second set of leaves.

Leaves. Edges burnt

Leaves. Other

Plant. Other

6y ago

1

5