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Back to Grow Questions
HELP - Black dots on leaves
Gluco
started grow question 5y ago
HELP !!! I got black dots spreading on my plants ! Is it leaves stephoria? Phosphorus deficiency ? Thanks for your help I'm panicking ahahh
Open
Leaves. Color - Black or grey
Feeding. Deficiences
likes
Answer
Similar Grow Questions
Solved
Scratchie
Calcium in tap water
Is 95mg/L calcium too much in tap water? (It's probably a little lower than that, since that's exit measurement from the waterworks.) I haven't seen any signs of acute calcium toxicity, but I'm worried about buildup.
Feeding. Chemical composition
Feeding. Deficiences
Feeding. Other
3y ago
7
7
Solved
CastlesMadeOfSand
Same as previous, don't want to close grow question but now i see i cant reply.what i have to do flush?and then add more vegfertilizer?until now only
didn't want to close i just want to meke replies to the users who respond me!sorry i never feed her,never,until now,so why N toxicity?soil is biobizz lightmix But know i see the new leaves coming and they aren't curling so in as good sign maybe the the new pot soil aredoing good?
Week 3
Feeding. Deficiences
4y ago
2
2
Solved
Dillsnills
Leaves are curling downward, help on what's going on and what to do is greatly appreciated
Trying to figure out what's going on, the leaves r curled down, ik I have too much nitrogen going on I moved the lights further away I'm watering it today jus pH water, advice opinions on what's going and what I should do is greatly appreciated. Temp 77f rh50%, ffof happyfrog mix
Leaves. Curl down
Setup. Strain - Autoflowering
Feeding. Deficiences
4y ago
2
2
Solved
inhale_exhale
Magnesium deficiency
looked for similar cases in grow questions and now think it’s a magnesium deficiency. I use biobizz Calmag 0.5-0.8 ml/L like in guide. Last week 1 ml/L. but magnesium deficiency does not go away, Question for biobizz users, how much Сalmag can be used before overdose?
Week 3
Feeding. Deficiences
1y ago
5
8
Solved
yokotasan
Looks like cal deficiency, but i don't know
Is this Cal deficiency? Only top leafs are deffected this way. Ph is around 6,2-6,4. Also this girl looks slower than the other two (which looks fine)
Week 6
Feeding. Deficiences
3y ago
3
4
Solved
Cauli
Leafs on top turning slightly yellow and getting black spots
Hi fellow growers, any idea on what's happening to this plants? All three pictures are different plants and it is spreading super fast. One plant in tent doesn't show any of the symptoms. I already flushed them and gave them a light nutrient solution with PH 6,2
Leaves. Color - Black or grey
5mo ago
4
5
Solved
Doolymoo
How do you measure EC without a gadget? Gonna start using nuts (canna) now, bit late maybe but I’m just learnin! EC seems to be where it’s at! Ex took gadget when we split. Hmmm 👿 please feel free to comment on plant health!
Week 3
Feeding. Deficiences
5y ago
2
Solved
Jelly
Burn or deficiency?
Organic living soil, top dressed once w guano and vermiculite at start of flower. Last week fed with molasses and now have some yellowing on the upper leaves, some brown spots on top leaves, and red stems on one. No bottled nutes. Burn or deficiency?
Week 8
Leaves. Color - Yellow
Leaves. Color - Mottling
Feeding. Deficiences
3y ago
2
Solved
Percy
deficiency or??
what are these please look like rust on me plant only a few leaves but clearly a deficiency somewhere got a feeling maybe nuits but what? shes day 43 autoflower soil and perlite mix substrate fed BioBzz nuits with AN BudCandy 1 litre of water per week (so 1 feed pw)
Other. Other
Plant. Other
Feeding. Deficiences
4y ago
2
5
Solved
Wilax
HELP: Defficiency or oversaturation? [Genetics: Autoflower (blckbrry x afghan) 20 days old]
Symptoms: stunted growth + Pale lime green leaves + edges are curling upwards (canoeing) + Leaf vein is purple + drooping + burn spots on tips and leaf face Nutes used on day 12: 1/2 of a crushed fert stick (13-4-5) diluted into ph neutral water. Any advice would mean the world!
Week 2
Leaves. Tips - Burnt
Leaves. Color - Pale
Feeding. Deficiences
5y ago
2
Solved
Lasninasverdes
Es deficiencia de nitrógeno y algo más ??
Muy buenas fumones,¿deficiencia de nitrógeno?¿es hongos o moho lo de la hoja las manchas ?¿ alguna deficiencia o exceso ves además ? Muchas gracias por vuestro tiempo.
Other. Other
Plant. Other
Feeding. Deficiences
4y ago
1
1
Solved
GhettoStyle
friends, help me with advice what kind of yellowness on the leaves is what this can be!?
this is a clone that moved into the system a week ago! Now he has advanced GMB 1.2 (EC) pH 6.1 fertilizer
Setup. Clones
Setup. Lighting
Feeding. Deficiences
3y ago
1
1
Solved
TheNextGanjaMan
Yellow spots
Did these yellow spots appear on the plant, only on this one, could it be because of dry soil? Or lack of NPK?
Week 1
Feeding. Deficiences
3y ago
5
4
Solved
Quintus
Textbook deficiency/over feed, any advice on wich one ?
Hello guys ! I think i'm encountering a text book deficiency/over feed but can't figure out which one. This is a Frostbanger auto from 24buds in Plagron royal mix at week 4, under 150 led watt. Been giving her only some power roots & power zym with evaporated tap water :(
Leaves. Edges burnt
Leaves. Color - Yellow
Feeding. Deficiences
3mo ago
4
Solved
PolishFarmer
Coco grow problem
Hi Guys! I have issue in my grow. Girls are in 9th week from seed, 2nd week flowering. Coco substrat pH 5.8 EC 1.0-1.1 temp 23/24 humi 50%. Water EC 0.1 + calmag up to 0.2-0.3, Coco a/b up to above value 1.1-1.2/ph5,8. I believe that are deficiencies by too low ph for bloom stage
Leaves. Color - Black or grey
4y ago
1
2
Solved
Clutch
What leaf problem am I dealing with?
Fan leaves are turning black from the inside to outside. What's going on here?
Leaves. Color - Black or grey
4y ago
3
4
Solved
santope
Hello again I make resarche about my problems....i diggin and diggin an i not 100% sure but the symptoms were exacly like it sulfur deficiency I check a milion of photos i read a lot of articles.an this is my opinion can somebody help me with one more time thanks
Feeding. Deficiences
5y ago
1
Solved
hooolian
nute burn survival
One plant has strong nute burn - i think too much topmax - i have been flushing with plain water - but do you think it is too far gone? can it be saved? any tips on getting it over the line? it is now in week 12 of flower. trimmed leaves - not all of the plant is burnt tho!
Week 11
Feeding. Deficiences
3y ago
3
3
Solved
Zegr8
Leaves burn
Hi! Is this nutes burn? Damage is on the upper/middle part of the canopy on very few leaves, but many more have black tips. I’m puzzled because during veg I was feeding the plant higher ppm than now and never had a problem!
Leaves. Edges burnt
Leaves. Tips - Burnt
Leaves. Color - Black or grey
5y ago
2
Solved
Sup3rNov4
PH all kinds of fucked up!
Urgent update. So it turns out the issues all alone where the soil ph which after testing it was PH 3.2 😳 I have flushed with ph 6.8 water and then added some epson salts bringing the final ph back to 5.6-6.2. I then topped the pot with new fresh compost. Will she survive?
Week 9
Feeding. Deficiences
3y ago
2
2