The Grow Awards 2026 🏆
Start My Diary
Start My Diary
Login
Start My Diary
Home
Diaries
Strains
Shorts
Questions
Contests
Growers
Seeds
Breeders
Nutrients
Equipment
Blog
Login
Sign Up
Following
Follow
Brands
&
Growers
to get updates
Back to Grow Questions
Deficiency or excess
FBblueberry
started grow question 4y ago
Is this a deficiency or excess
Solved
Leaves. Color - Dark-purple
likes
GrowingGrannie
answered grow question 4y ago
It looks like a definite nitrogen deficiency... if you had linked this question with a diary, we would be in a better position to advise you but on the surface, you need to definitely add nitrogen!
likes
Complain
Selected By The Grower
Similar Grow Questions
Solved
thebiologist
Growth stopped week 2, brown spots, purple leaves and stem
These plants havn't had the best start. I followed the house and garden feed chart but used roots gold instead of silver. Imonitored ph, temp, EC, humidity often, everything was good.?
Week 3
Leaves. Color - Dark-purple
Plant. Stem - Red or purple
Feeding. Deficiences
5y ago
2
2
Solved
BudmanFlyingjoint
what's going on? First photo was on 21/3/2024, 2nd on 25/3/2024, 3rd on 26/3/2024 Leaf kind of necrosis. New sprouts under fan leafs show green and yellow both bright.
Leaves. Color - Pale
Leaves. Color - Dark-purple
Leaves. Color - Mottling
2y ago
2
Solved
PtiteBox
N or Mg lacking ? :(
Look like my lady got some N-Def, maybe Mg lacking. Anyone to confirm this idea ? I will add some Worm casting for Nitrogen or Epsom Salt for Mg 😬
Week 7
Leaves. Color - Dark-purple
5y ago
1
1
Solved
Antidotes
Veins in the leaves are discoloring Big Bud Auto 7 weeks old grow in soil
What is happening to the leaves ???
Leaves. Color - Dark-purple
2y ago
2
2
Solved
sparxxx007
Another round of Name That Deficiency
5 weeks into flower and this plant seems to be the problem child but she’s also the one showing the most growth. PH is 6 on her, was originally 6.2 but was having a manganese deficiency so went down to 6.0. Gave 3/4 of recommended nutrients in last feeding. Not sure what to do.
Leaves. Color - Yellow
Leaves. Color - Dark-purple
5y ago
1
1
Solved
GreenBean
leaves seem a bit dark green have cut down nitrogen and theres a good amount of phosphorus and new growth is pretty purple and stems are very purple im pretty sure its something to do with feeding, are plants still missing something? or should i just leave them and see what comes
Week 16
Leaves. Color - Dark-purple
Plant. Stem - Red or purple
6y ago
1
1
Solved
Retro23
Plants looking HORRIBLE pls HELP!
Wassup fam this is my first grow and my plants are looking HORRIBLE I just wanted to know is it possible to save them. I transplanted them from a aeroponics system to Coco coir maybe that’s the problem? Some pls help😢
Leaves. Curl down
Leaves. Color - Dark-purple
Other. Other
5y ago
1
1
Solved
Antony_mow
Листья меняют цвет
Это нормально что листья начинают менять цвет на пурпурный? Выглядит сногсшибательно!
Week 5
Leaves. Color - Dark-purple
3y ago
5
5
Solved
Magruder
Purple leaves
Hi all, got some purple on my upper leaves and just wondering what you think? Ph is 6.5 to 6.7.
Leaves. Color - Dark-purple
6y ago
4
12
Solved
hellobecka
Leaves turning purple/ jack herer auto
Hi! My plant seems super healthy aside from some of her leaves turning purple? We had a recent temp drop; maybe that could cause it? Tia
Leaves. Color - Dark-purple
4y ago
4
4
Solved
SaiMutsu
N or P deficiency?
Need help to understand if this is P or N deficiency. It's on the lowest fan leaves, one is more pronounced than the other, and it's mostly on one side. Stems and veins look like they're giving hints of P def but from what I searched leaves look like it could be N def.
Leaves. Color - Dark-purple
Leaves. Color - Dark-brown
2y ago
3
3
Solved
HARLEYBAGGERBOI
Dots and spots on a couple leaves.. any ideas?
Need some help! Found some leaves with red/purple looking dots, some leaves lightening in colour, performed flush, initial runoff was 5.8-6... thinking possible lockout?
Week 6
Leaves. Color - Dark-purple
6y ago
3
2
Solved
dank604
Possible overfeeding nutes?
Could someone possibly identify the issue on that one leaf? I had another like that a bit worse that where the edges started to curl. They were fan leaves so I ended up removing them as they were a bit worse off. Doing much better now, only guess is too much nutes.
Week 5
Leaves. Color - Dark-purple
Feeding. Deficiences
6y ago
2
1
Solved
Cana_Gen
Am I dealing with a Calcium Deficiency
Really wondering what’s going on with this burn. Only really affecting the top new growth and from what I’ve read it’s a calcium deficiency. Please help
Week 1
Leaves. Color - Dark-purple
Leaves. Color - Dark-brown
5y ago
1
1
Solved
HierroYOlivia
Dark tips
it seems to me that the tips of the leaves have a very dark color, it looks like an excess of nitrogen but in three weeks I have never fertilized and the only additions to my biobizz light mix are a sprinkling of guano kalong and 10% of worm humus biobizz.
Week 3
Leaves. Color - Dark-purple
Leaves. Color - Black or grey
5y ago
4
3
Solved
Paultemp
Purple in week 1
Purple in week 1 ? This is normal ?
Week 1
Leaves. Color - Dark-purple
5y ago
4
4
Solved
MrGreenMan
How are they looking? Think she had light stress last week so light is much higher now
Hey everyone, my Dark Devil Auto has has dark green leaves for weeks now and is now showing purple under her leaves. Just wanted to know people thoughts? I’m only giving 450ppm to all plants with GHE FloraTrio in line with their feed chart and some bent tips due to small tent!
Leaves. Color - Dark-purple
5y ago
1
Solved
sugar_leaf_daddy
Short LSD auto with deep purple core
end of week 4 and almost no space between internodes, feeding her the same as the other cultivars germinated around same period, same medium, distance from light, same intensity... what am I doing wrong? What about this dark purple core development? HELP!!!!
Leaves. Color - Dark-purple
Plant. Spaces between nodes
4y ago
3
4
Solved
Complicate
Is this turning purple from temp change
So it looks like what I thought was a brown spot (under the grow light), appears to be purple when I pulled it out to get a better look and stake it down. I did switch the light to something cooler, could this be from temp dropping. Not worried yet, just curious. Thanks
Week 4
Leaves. Color - Dark-purple
Leaves. Color - Dark-brown
6y ago
1
1
Solved
MrGreen187
Hungrig oder Calmag Defizit?
Hi, jemand eine Idee ob ich ein Nährstoffproblem oder Calmag Problem habe? Symptome: helle Blätter, ganze Pflanze. Jetzt lila spitzen und Ränder dazu. Außerdem vereinzelt im mittleren Bereich (ältere Blätter) gelb.
Week 7
Leaves. Color - Yellow
Leaves. Color - Dark-purple
10mo ago
5
2