The Grow Awards 2026 🏆 
Brown patches, spots, leaf tips and margins burning, tips curling up.
SavageGardensstarted grow question 5y ago
Hello, curious if anyone has thoughts on issues with plants. Thinking cal mag deficiency and/or overwatering. I wouldn’t rule out nute burn, chlorine issues, PH fluctuations. Some plants stunted, very small distance between nodes and leaf chutes.
likes
Answer
Similar Grow Questions
Solved
GermanGrow182
Hail damageNach einem starken hagelsturm wurden meine automatics zu30-40% entlaubt und dass Bett geflutet (50l Box mit löchern am Boden. Danach stoppte das Blüten Wachstum und die Blätter wurden erst an den spitzen braun und trocken, dann komplett. Was ist das?Week 9
Leaves. Tips - Burnt
3y ago
3
3
Solved
TechDCo
1. Over Fed (seaweed?)
2. Burnt? Cauliflower..
3. Calcium Deficiency
4. Hydrogen peroxide 12% Food-grade 30/70 Mix.
Personally I think it's the hydrogen peroxide 12% mix, the hydrogen gave one of its atoms to the neuron of the Diatomaceous earth metal clay. With help from heat2y ago
8
8
Solved
Homegrown_Mary
Do you think the yellowish leaves are because of nutrient deficiency, a nutrient burn, or just her fall colors?Week 14
Leaves. Edges burnt
7y ago
2
1
Solved
Maskedcucumber
At what stage do leaves get darker ? This is confusingI overwatered them at the beginning of veg and then I fed them with 0.7 ec nutes max, EC would go up if I gave more. I've had tips burning probably from light too close. I find that leaves are pretty dark but it may be because of the strains. When leaves do get darker in flo ?3y ago
3
4
Solved
Abadakor53
What is this deficiency?Some leaves are burnt but the ph is good, watering is good light and temp good soil seems good and balanced. The humidity is very low can it be because of humidity?Leaves. Edges burnt
Leaves. Tips - Burnt
5y ago
2
2
Solved
420pete
Yellowing/purpling leaf tips outdoorsIm experiencing yellowing/purpling on upper canopy leaftips of my outdoor organic cannabis plant in week 2 flower. I'm feeding via compost+dry amendments so over/underfeeding is unlikely. What might be the cause? nutrient lockout? Relatively low temperature (57-75F)? pests?Week 10
Leaves. Edges burnt
3y ago
7
5
Solved
Rogue3000
Need help to detect deficiencyBlue Dream Auto by FastBuds, she's on 2nd week of flower.
Leaves start curling up and there's some grayish discoloration between veins.
Last 2 days it was 70% humid and temp around 19 C
What can cause a problem? White Widow nearby totally okLeaves. Curl up
Leaves. Veins - yellow between
10mo ago
8
5
Solved
tokey
Need help identify leaf issue.My auto flower leaf have some brown spot on the leaf, brown spot on the tip of the leaf (nute burn?), leaf look droopy
grow medium - canna terra professional
nute - canna terra vega ( I feed every 3-4 days)
light 24/0
I didn't Ph my water just stright from the tapLeaves. Edges burnt
4y ago
1
5
Solved
Greenleaves1980
Pineapple auto in soilI have not made a diary yet, this is my first grow and wanted to get a first run under my belt before posting. I'm 6 weeks in on a pineapple express auto grow and my leaf colour is starting to worry me. Can someone take a look and let me know if I have an issue?Leaves. Edges burnt
5y ago
1
1
Solved
Dippp
Problem with plants in the 3rd week of vegetation.I'm posting again because I accidentally marked it as resolved.
I was using BioBizz CalMag from the beginning, but when I switched to Advanced Nutrients, I stopped because Ph Perfect Sensi Coco Grow A and B already contain CalMag.Leaves. Curl up
Leaves. Curl down
Leaves. Color - Black or grey
1y ago
1
2
Solved
kushinator
Help! Lower fan leaves drying out slowly at the tips and edges. Doesn't look like nitrogen deficiency to me, but please prove me wrong!10 days ago the lower set of leaves started drying out (they get brown not yellow). They don't receive light, but now it's already started showing on the third set of leaves. Does it look like nitrogen deficiency or can it be something else? Just gave it full strength nutes.5y ago
2
2
Solved
supermegadjj
Situation getting worse. GGrowth almost stopped, leaves growing very thin and small. What am I doing wrong ..? Not the first time this happened. Thanks!I've posted a day or two ago question about this girl as she slowed down growth and drooped+small leaves +red leaf stem. Today I can see lower growth starting to loose colour and there are some brown spots on new growth... i will flush her today. 3rd photo lower growthLeaves. Tips - Burnt
Leaves. Color - Yellow
Plant. Stem - Red or purple
5y ago
1
2