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Grow Questions
Phosphorus deficiency?
Phosphorus deficiency?
GemansGoGreen
started grow question a month ago
Phosphorus deficiency?
Open
Leaves. Color - Yellow
Leaves. Color - Dark-purple
Leaves. Color - Dark-brown
like
Answer
Roberts
answered grow question a month ago
Looks more like potassium and calcium. What could also be caused by a ph issue or other root related issue in regards to feed and amount of water.
1 like
Complain
Similar Grow Questions
Solved
VeruZ
Stickstoffüberschuss?
Habe bei meiner Auto das Problem das sie kaum in die Höhe wächst, dazu die Flecken auf einem Blatt. Ich habe aber das Gefühl das die anderen Blätter auch zu dunkel sind? Vielleicht wächst sie wegen einem Stickstoffüberschuss nicht mehr?Sollte ich erstmal ohne Dünger gießen?
Leaves. Too many
Leaves. Tips - Die
Leaves. Color - Dark-brown
3 days ago
2
1
Solved
kira90
leaves with brown spots
hi guys, do you know what these stains could be? Can you give me some advice please?
Leaves. Color - Dark-brown
6 days ago
1
1
Solved
Dragosani666
Top leaves turn dark and curl - What can I do?
I've had Nitrogen and possible Cal/Mag deficiencies 2 weeks ago. Mid last week I started noticing some burn a the tips, so i dialed nutrients back again. By this weekend the tips of the leaves curled further and turned dark. The rest still looks a bit pale, but buds look good.
Week 7
Leaves. Curl up
Leaves. Color - Pale
Leaves. Color - Dark-brown
5 days ago
4
5
Solved
xhibo
light stress of seedling
Light stress (image of 28.5.): is it likely that my plant will recover?
Week 1
Leaves. Color - Dark-brown
5 days ago
4
4
Solved
VeruZ
zu viel Dünger oder zu starkes Licht?
Hallo meine 2 Ladies bewegen sich jetzt auch Woche 4 zu, vor 1 Woche habe ich mit düngen angefangen. Ab und zu sind die Spitzen etwas gelb vielleicht weniger düngen oder zu starkes Licht? Sehen sie soweit gut aus?
Leaves. Curl down
Leaves. Color - Yellow
13 days ago
4
3
Solved
inhale_exhale
Two problems in a week. I diagnosed the first one based on similar grow questions (: maybe not right )
First three photos appeared a week ago, I decided that it is calcium and took a more reliable Ph meter, maybe not right, but no new spots appeared. Second problem at the end of the week, 3 days after defoliation 2 large lower leaves and 2 leaves inside. 30 hours after watering.
Week 6
Leaves. Color - Dark-purple
Leaves. Color - Dark-brown
12 days ago
4
3
Solved
Unpluggy
Deficiency?! Please help with weird Leaf signs :(
This Plant didnt have any problems in This whole run. Sinne 1-2 Weeks she started showing These weird signs and i cant figure out what it is. I thought it could maybe be phosphorus deficiency or something. Got a lot worse in the Last few days! :((
Leaves. Color - Dark-brown
Leaves. Other
12 days ago
1
Solved
Mike_269
Nitrogen deficiency but why?
My Critical Auto is more and more wilting and yellowing. Most likely due to nitrogen deficiency. Some have red tips on . PH of soil was normal, how can I make sure that it's not nutrient lock anyway? Should I flush it nonetheless? Feed it more? More info in my diary.
Leaves. Color - Yellow
12 days ago
1
2
Solved
CANNA_401
Gelbe Blätter
Denkt ihr die plötzliche gelb Färbung der oberen Blätter kommt durch die Blüte oder weist das eher auf einen Mangel hin?
Leaves. Color - Yellow
12 days ago
2
2
Solved
forestflower
Day 11 - Yellowing tips, pale color, slow-ish growth
Germinated in jiffy pallets - good seedling stage, put them in 2L Pots with LightMix on day 7. 26° avg temp, 60-78% humidity, watering 150ml when top soil dry with 6.7 pH, BioBizz Root Juice & Bio Heaven so far. Bilberry Mini 160W at 40cm distance and 25% power. Why yellow :(
Leaves. Color - Yellow
Setup. Strains - Photoperiod
Feeding. Schedule
12 days ago
2
3
Solved
xoxo230409
Yellow lower leaves
Hello, This is my first grow and now I'm confronted with the first problem. The lower leaves on my plants are turning bright and yellow. A few leaves have very small brown spots. Can someone help me and perhaps have an idea as to how I should proceed? Thanks.
Leaves. Color - Yellow
11 days ago
1
Solved
HomeGrown33
Brown Spots on Leaves
I’m noticing some light brown spots on my leaves. After researching it seems that it was either 1) Manganese deficiency 2) calcium deficiency or 3) overwatering. I don’t think I’m overwatering. It could be the nutrients but would like input!
Leaves. Color - Dark-brown
Leaves. Color - Mottling
11 days ago
4
3
Solved
MarcoCasanova00
Pest infestation left my plant folded and weak. I treated it, but now blacked out leaves?
Ants were farming an oval shaped bug's secretions that was eating my stem and going underground, leaving a trail of a film-like substance. Treated it with neem oil, cigarette butt tea, garlic and dishwasher soap to fend them off. Black leaves now. Tips?
Week 4
Leaves. Color - Dark-brown
Leaves. Color - Black or grey
Other. Bugs
14 days ago
3
Solved
ykscotttyk25
Durban Poison
What can I do to help this
Leaves. Curl down
Leaves. Color - Yellow
13 days ago
1
2
Solved
Trickotreat47
Black spots on leaves
So I have those black spots on leaves on top of the canopy of my plants. Can someone please explain what are those and how can I treat it? Also the edges of the leaves on top of the canopy are brown and crispy.
Leaves. Color - Dark-brown
13 days ago
1
1
Solved
ykscotttyk25
My plant is sick like never before,should I end her life or wait for a merical
My plant is sick like never before,should I end her life or wait for a
Leaves. Tips - Die
Leaves. Curl up
Leaves. Color - Yellow
8 days ago
4
4
Solved
big_bro_is_bloomin
Yellowing sugar leaves?
Does this yellowing on the sugar leaves look problematic? I know the end is near so I don’t want to do any damage this close to harvest. Think another week will be long enough? Vermiculite/Perlite/Soil @ 40-40-10% Lotus Bloom @ 1/2 dose (700ppm) 100w LED 14” above canopy
Week 10
Leaves. Color - Yellow
8 days ago
3
3
Solved
Germaican
Deficiency because she starts to flower? Leaf tipps light green. Some purple at the stems.
I have not fed her, just a bit here and there. So I do believe she starts to need her medication. Its going to the end of preflower week1. Symptoms: some light tipps and some purple at the stems. Solution: feed her P and K. could add some CalMag ? Or Still feed more NPK?
Week 5
Leaves. Color - Yellow
Setup. Strain - Autoflowering
Feeding. Deficiences
10 days ago
4
4
Solved
Kratistos
Upper leaves are yellow and not smooth
I noticed leaves on top are closing and today are yellowish. Older plant aren’t stretching more, I thought it’s too much light or too hot but it’s kinda weird because light are at 40cm from longer plant and 50 from smaller, temperature are max 26C. So, it’s normal?
Week 3
Leaves. Veins - yellow between
Leaves. Color - Yellow
19 days ago
3
Solved
CANNA_401
Stickstoffmangel?
Könnte das ein Zeichen für einen Stickstoffmangel sein? Diese verfärbungen kann ich momentan bei beiden Purplematics beobachten.
Week 5
Leaves. Color - Yellow
23 days ago
1
1