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Back to Grow Questions
Curling dark leaves
Bretwalda
started grow question 4y ago
Advice for what i think is nitrogen deficiency, have flushed with ph 6.3-6.4 water about 900ml
Solved
Leaves. Curl up
likes
Hazemaster420
answered grow question 4y ago
She’s fine, let her dry out a bit! Also add some Magnesium sulphate to straighten her out! Cal mag her up! Mainly Magnesium though!
1 like
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Selected By The Grower
GrowersParadise
answered grow question 4y ago
to me looks like plenty of Nitrogen, possibly over watering? how often are you watering?
1 like
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Bretwalda
answered grow question 4y ago
@hazemaster420
, is cal mag and magnesium sulphate same thing or give both?
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Roberts
answered grow question 4y ago
Nitrogen toxicity is issue
2 likes
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Hazemaster420
answered grow question 4y ago
Theirs plenty of nitrogen though, see how the leaves are slightly turning? This is a sign of too much Nitrates/nitrogen!
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Similar Grow Questions
Solved
levensfiets
some of the bottom leaves (all 3 plants affected) are slightly curling up towards the end. she looks pretty healthy to me, so i'm wondering if anyone here recognises this and knows what might cause such symptoms?
Week 3
Leaves. Curl up
6y ago
2
2
Solved
AutoAutomation
One of three plants curled its leaves.
One of these three seeds seems to have suffered a bit, but unsure why - the conditions have been pretty much identical from what I can tell. The first set of leaves curled quite significantly but the new growth seems to be ok? Any ideas?
Week 2
Leaves. Curl up
5y ago
1
Solved
Fayah_Burn
Leaves curling upwards
What could this be? I consider too intense lighting, could that be possible. Just transplanted a few days ago into these 1,7l pot's. Since it is the first time i use the The Mars Hydro TS 1000 for flowering i think i might have given the plants too much light.
Leaves. Curl up
4y ago
2
3
Solved
matias_scrog
Hojas enrolladas
Me podrían decir porque las puntas de las hojas se han enrollado así? Mido ph. 6th semana de floración
Week 15
Leaves. Curl up
3y ago
3
1
Solved
happytrails
Spotted crisp leaves
What's up with these leaves? They've all been spotting up, crisp edges and tips curl. I keep flushing them and it helps. I feed them 1 tsp calmag to each gallon and often the mixture gets diluted as much as half. PH water was 6.2 but soil 4.5. 15" from 70% light.
Leaves. Edges burnt
Leaves. Curl up
Leaves. Color - Mottling
5y ago
3
1
Solved
jamjam887766
leaf spots and curl
I have a few leaves with some spots and a few that have a side that curls. What do you guys think? Right now I'm just using Fox Farms Ocean Forest soil and water - I'm planning on adding nutrients this week. Will that solve these issues?
Week 3
Leaves. Curl up
Leaves. Color - Mottling
5y ago
2
Solved
Frm11001
Ayuda: Double cookies auto
Día 33, variedad: Double cookies auto (BSF). Comienzo de la etapa de floración, sin uso de fertilizantes aun. Riego con ph 6.0, 1.5lts de agua por planta cada 48hs (macetas de 16L). Led 400w a 40cms de distancia (no puedo más distancia) 26 grados y 55% HR Qué pueden tener?
Leaves. Curl up
Leaves. Other
5y ago
1
3
Solved
Inkognito011
SOS...! Help...please... Leaves curl up
On the lower branches, the leaves change shape,
Week 6
Leaves. Curl up
Other. Other
6y ago
2
2
Solved
johdlong
Heat and light stress?
I think this is heat/light stress. The tips of the leaves yellow and point upwards, while some leaves are trying to flip over. Temps get up to ~80 right under the light, and this bud gets greater than 2000 µmol, but she looked like she loved it up until this point
Week 15
Leaves. Tips - Burnt
Leaves. Curl up
Leaves. Twisted
4y ago
2
Solved
JuanCarlos97
Hello fellow growers :D thx a lot Firstly, is the reason why my plants (especially cookies) are very slightly curling/folding at the ends of the leaves because the LED is too powerful?(Reason to be worried?) Secondly, should I start adding nutrients? Just 1/4 of Bio-grow for now?
Week 2
Leaves. Curl up
Setup. Lighting
Feeding. Schedule
6y ago
1
3
Solved
LumberjackBuds
So a bunch of my babies are getting this extreme leaf curling. It happened when the lights were off for only like 3 hours. Could it be windburn or Humidity? Nothing is out of whack in the Grow room temps were under 80 and humidity was >70 because I have a dehumidifier. Thanks
Week 3
Leaves. Curl up
7y ago
1
Solved
Chubaka26
Help please! First time growing
If i put to strong fertilizer to my plant, some leafs gone yellow and fall out, how do i save my plant?
Leaves. Curl up
Leaves. Color - Yellow
Plant. Too short
3y ago
3
4
Solved
forgettenseedling
Deficiencies need help
Hello Community, my Plant starts to show some deficiencies, anyone know what it could be? Known Problems: -fungus gnats -didnt looked at the PH (because its BioBizz soil)
Leaves. Curl up
3y ago
4
2
Solved
Medicanna
Classic N toxicity (:
Heyho :) since she has progressing leaf tip burn and curled tips which I'd almost certainly say is a nitrogen toxicity, would you recommend going down to 50% general strength or maybe leave out the grow supplement at all and just feed Bloom? Cheers guys :)
Week 8
Leaves. Tips - Burnt
Leaves. Curl up
6y ago
1
2
Solved
Hellishjam
Hey growmies! Doesn’t anyone have any idea what is happening to this girl? Last 2 picture were updated today. It start towards the top of her on the main stem and is spreading.
Week 5
Leaves. Curl up
6y ago
2
1
Solved
GetLit420
What’s Happening Here With My Leaves?
Not sure what’s going on here. It’s happening to 3 of my plants and I’m not sure whether its good or bad. I haven’t watered in 3 days so I don’t think it’s overwatering because it just happened today.
Week 2
Leaves. Curl up
6y ago
2
Solved
bobo66
hplvd again? or just the heat?
maybe i'm paranoid, but i'm getting tired of it. what do you say, do I have a virus or did they just have a problem with the heat?
Leaves. Curl up
3y ago
1
3
Solved
Flavaz
Runtz muffin curling leaf update
I posted a question yesterday regarding leaves curling up on my 10 day runtz muffin, presumed heat damage but after a feed and 24 hrs she's come back from it, recently upped the light to 400w, do you think they just take a bit of time to adjust to it? They all seem good now
Leaves. Curl up
5y ago
2
2
Solved
Kennethy
Burned leaves.
Is this heat stress or nutrition related
Leaves. Edges burnt
Leaves. Curl up
Leaves. Color - Yellow
2y ago
7
6
Solved
Romobo16
Black spots
It's the last clon from that strain that I have (There are no longer seeds for sale) after saving her (She was in terrible conditions) she was growing great this last 5 days until yesterdays that I saw this black spots. PPM 670-PH 5.78-WaterT 68.7-AirT 71.6-PPFD 120-Humidity80%
Leaves. Curl up
Leaves. Color - Black or grey
1y ago
2