The Grow Awards 2026 🏆

Back to Grow Questions

Brown spots on some newer but not new

Herbyfirbystarted grow question 2y ago

I’m 6wks into gorilla cookies and some of the leaves have developed brown spots only on the ones close to the top of new growth

Herbyfirby

Herbyfirby

Solved

Leaves. Color - Dark-brown

likes

Organomananswered grow question 2y ago

Calcium deficiency. Add a cal/mag booster to your feeding line-up or increase the dosage if already using one. Remember too, what is showing now in the leaves, is a direct reflection of what was occurring in the root zone 2 weeks ago. The damaged leaves will not recover or "heal" themselves, but new leaves should be unaffected once treatment begins.

1 like

Complain

Selected By The Grower

Similar Grow Questions

Solved

Only single leaf, still cal/mag?Anyone knows what causes a single leaf to show rust patterns, almost like cal/mag deficiency. Whole plant looks healthy except for this one leaf, literally. DWC, and I use tap water

Leaves. Color - Dark-brown

6y ago

1

2

Solved

Yellow Leaves again Leaves are turning yellow/brown again, should i give it a proper flush again?

Leaves. Color - Yellow

Leaves. Color - Dark-brown

2y ago

3

4

Solved

Droopy leaves?Is my plant okay, i feel like it could be overwatering but i’m not sure, leaves are droopy, and first leaves it has starting to get little dark spots, not sure what’s happening

Leaves. Curl down

Leaves. Color - Dark-brown

5y ago

2

1

Solved

Tropicana cookies purple(RQS)Do u guys think she will make it out ? I have done everything. I over fed it during the veg .Is Autoflower N she is in 75 flower from RQS. Tropicana cookies purple .will the THC downgrade or the taste ?

Leaves. Edges burnt

Leaves. Tips - Burnt

Leaves. Color - Dark-brown

1y ago

1

Solved

Mehrere Mängel 2. Grow mit Gorilla Cookie Autoflower Samen. Hinten links sehen die Mängel aus wie hinten rechts, denke Phosphor also laut Bildern und vorne ist so ziemlich vieles gemischt aber extrem. Der einzige Bud der richt wenn man ihn anfasst ist der von der hinten rechts die anderen nicht

Buds. Not fattening

Leaves. Color - Dark-brown

Leaves. Color - Black or grey

6mo ago

2

Solved

Blattprobleme bei Pflanze (Wahrscheinlicher Kalziummangel?)Ich habe 2 Pflanzen in Zelt und eine der Pflanze zeigt ziemliche Mängel. Viele Blätter sind mittlerweile gelb mit braunen Flecken. Die andere Pflanze hat diese Mängel aber nicht, beide wurden gleich gegossen, etc. Ich habe vor ein paar Tagen DolomitKalk und Worm Casting benutzt.

Leaves. Edges burnt

Leaves. Color - Yellow

Leaves. Color - Dark-brown

8mo ago

7

4

Solved

Light green patches on many leaves Hey, few days before I noticed light green patches on leaves and now it's visible on more leaves. I noticed it only on large leaves now. What can be a cause of this? Also, I underwatered plant these days and maybe this can be a cause?

Leaves. Color - Dark-brown

Leaves. Other

6y ago

2

2

Solved

TheProfessorGrows

K deficiency? Or something else?Not sure how to go about this deficiency. PH is solid at 6.5 so it’s not a ph issue. It seemed I had corrected the deficiency when it first appeared a few weeks ago, but now the brown spots seem to be spreading again. I think it might be K but not sure? Any ideas?

Leaves. Color - Dark-brown

3y ago

1

3

Solved

Brown spots on some of top/bottom leaves Hi all, So I’ve been getting these small brown spots on some on her top leaves as well as on some of her bottom ones. No idea what this is, for sure no Cal or Mag def as I have been consistently feeding her CalMag. Thanks ✌️🏼

Leaves. Color - Dark-brown

Leaves. Other

6y ago

2

Solved

Day 9 I noticed one of the girls has 2 small brown spots on one of the leafs. I have the spots circled in the pictures. Could this be a calcium deficiencie? Thanks!

Leaves. Color - Dark-brown

7y ago

4

3

Solved

Calcium deficiency, cal-mag now in hand, water now, or wait for normal scheduled water? Last water yesterday.Plants are suffering from an early stage of calcium deficiency, received a bottle of cal-mag today. Watered last night cause I didn't want to wait any longer. Should I wait for my next water (2 more days) or give a single dose of Cal-mag now, to get some calcium to the plant?

Leaves. Color - Dark-brown

Feeding. Deficiences

5y ago

4

3

Solved

Leaves problems Hi friends, could this be lack of Calcium or some sort of fungi or xxx? Only 2 leaves on 1 plant affected...

Leaves. Color - Dark-brown

5y ago

2

1

Solved

Too much Nitrogen?here you can see the actual Color of my Queens leaves cause under the lights it gets a bit yellowish . And I wanna ask , maybe too much Nitrogen ? It’s really thick and shinny with deeeeep green Color . Stem is turning red 🧐

Leaves. Color - Dark-brown

5y ago

4

2

Solved

Why are some leaves forming small brown dots?What are these leaves doing? It seems to only be these 2/3 and I wonder why they form these brown spots.

Leaves. Color - Dark-brown

1y ago

1

2

Solved

Ph issues leaves dying I have a few leaves showing signs of ph issue, should I cut those leaves off now or wait until they die off?

Leaves. Color - Dark-brown

4y ago

12

8

Solved

Brown spots What are these brown spots and how can I treat them. I saw them only on 3 leaves.

Leaves. Color - Dark-brown

6y ago

3

4

Solved

Brown spots with slight yellowing Hello gromies. I'm seeing some slight yellowing and brown spots on my fan leaves. I've been bottom feeding so maybe it's a lock out issue with calmag. I flushed with tap to get some run off. Any suggestions?

Leaves. Color - Dark-brown

5y ago

1

1

Solved

Dos si dos nutrient ?conds ago Hi growers could i get some advice with my plant as i am First time growing auto i start nutrient Really late day (35 First signs off flower) First nutrient ( day 42) i add Hesi booster 0.5 ml /1 l and Hesi flower green bootle half dose. And day after something like tha

Leaves. Color - Dark-brown

5y ago

1

1

Solved

VPD related leaf issue? Brown spots, don't think its Cal related. Pls, any help would be appreicated.Brown spots on leaves, I thought it was Cal related, and tried different doses, with no success. Could it be VPD related? It can and does get very hot and very humid in the 1.5ftx2.5ft closet. Even when running no humidifier (Live in AZ). I've been struggling with this for months

Leaves. Tips - Burnt

Leaves. Color - Dark-brown

Leaves. Other

3y ago

4

Solved

Magic_Chelsea_Crew

Leaf problem Found this on the some leaves, don't know what it is, my suspicion is mold.

Leaves. Color - Dark-brown

4y ago

2

6