The Grow Awards 2026 🏆 
I added a couple pics of what looks like rust spot...
diamondtrichomesstarted grow question 7y ago
I added a couple pics of what looks like rust spots on the leaves of only the tall plant in 7 gallon. I’ve given these two plants the exact same feeding so not sure what is causing it.
likes
Athosanswered grow question 7y ago
Looks like calcium deficiency, specially since it it's happened on the top leaves.
TropicThunderanswered grow question 7y ago
Looks like iron or calcium to me.. Happy growing friend
1 like
Complain
Similar Grow Questions
Solved
Dillsnills
Can someone plzz help with what is going on?Can someone plzz help me w what's going on, not sure if it has to do with nute deficiency,nute burn, ph or what it's only w 2 of my plants a lemon autoseedmans Orange Sherbert Auto fast buds, should I trim the leaves that r affected or in general what can I do. Ph 6.5 wk6flowerinLeaves. Color - Yellow
Leaves. Color - Dark-brown
Feeding. Deficiences
5y ago
1
2
Solved
romi27
What kind of deficiency? What should I do? By the way, they're autos.What kind of deficiency do I have going on here?
I gave a good dose of calmag last night. The first signs were the dark spots on the leaves.
Been feeding ff bloom nutes every other day, 1/4 to 1/2 strength.
started from the bottom. Leaves turn yellow and then dry up.4y ago
3
3
Solved
Growjardin
Curling leaves and browny patchesLeaves curling down after 3 hours of light on so far, in coco soil, airpots, been watering once a day feeding once a week. Brown patches too, thinking up the feed or over water as was sitting in water in the pot saucersLeaves. Curl up
Leaves. Color - Yellow
Leaves. Color - Dark-brown
5y ago
2
Solved
KCduzit
Brown spots on bud site leaves?!halfway through flower and now in week 6 flower one of my plants is showing some large brown spots on only the upper leaves. I’m not sure if it’s a light or ph issue as the light is close. I stopped cal mag and some nitrogen this week but spots were showing up before.5y ago
2
2
Solved
Buds2k22
Leaf damage early onShould I cut the burnt tip off or leave it?! Check updated diary for more info and if problem isn’t what I mentioned help!Week 3
Leaves. Color - Dark-brown
3y ago
4
Solved
minigroww
Continuing calmag deficiencyWhat I think is a calmag deficiency started about 10 days ago. At first I thought it was too low PH (6.0 - 6.1), so I corrected that, but no luck. Then I started adding biobizz calmag, still no luck. It seems that the deficiencies are picking up speed again. Any ideas appreciatedLeaves. Veins - yellow between
Leaves. Color - Dark-brown
Feeding. Deficiences
5y ago
2
4
Solved
THCanbisGrower
What happen with my leaves?There are brown and red black spot on my leaves.
and lower the top there are brown red and white spot mix together on my leaves.
anyone know this problem??
Thank you. 😂Leaves. Color - Dark-brown
Leaves. Color - Mottling
Leaves. Other
3y ago
3
Solved
Chilipadi
Brown patchesBrown patches starting to appear on older fan leaves only. Calmag?Leaves. Color - Dark-brown
4y ago
3
3
Solved
TopDrippinPimp
Phosphorus deficiency?Wondering if this is a phosphorus deficiency... i dont think it looks like cal mag. Any thoughtsLeaves. Color - Dark-brown
5y ago
1
Solved
HAPPY91
Leaf Help PleaseWhats with the discolor and clawing?Leaves. Curl down
Leaves. Color - Dark-brown
5y ago
7
5
Solved
EvilGrower
Calcium deficiency?I recently bought Calimagic for my calcium fix. Prior to this week I have been using tap water for calcium. Is 2mL/gallon of calimagic too little? Noticed some leaf damage I believe to be calcium deficiency.
Does she need more calmag?
Thanks for your help all!Week 8
Leaves. Color - Dark-brown
6y ago
2
4
Solved
Diariesweed
Folhas pontos de ferrugemAlguém sabe dizer oque se passa??Leaves. Color - Dark-brown
5y ago
2
Solved
Chilipadi
Persistent markings spreading on leavesThe problem came back to this seedling with brown markings on leaves which has spread to 2nd set and slowly spreading the whole leaves. Ph runoff is stable 6.1 so is ppm. Idk whatelse to do to help. Been putting cinnamon on top coco too. Ppm in is 340ppm. Any advise please.Leaves. Color - Dark-brown
5y ago
4
5
Solved
Strombelete
Brown Spots on Leafs, veg and flowering, CalMag Def or overfert?Hi,
I have been running 2 Sensi Skunk Autos and 2 Sensi Tang Sugar with 43 days. Soil is All Mix and Nutes from the BioBizz line.
9l pots and watering every 2-3 day with 1l water. Ferts every watering like this: 1l - 1,0ml BioGro/1,8 BBloom/2,0 ActiVera/1,0 Top Max/1,0 CalMag
ThxLeaves. Color - Dark-brown
1y ago
3
1
