By continuing to use the website or clicking Accept you consent to our cookies and personal data policy. For details please see Privacy Policy
Accept
Yellowish spots ? Magnesium Deficiency ?
Hashyanswered grow question 3 years ago
It could be from early on. If its not got worse and hasn't effected other growth you may have already sorted it out. But over next few days if it gets worse you could have a slight calcium deficiency.
InspireMeanswered grow question 3 years ago
Hi mate, I think it looks like a calcium deficiency. Magnesium typically doesn't cause spots like that. Its more of a yellowing fade around the edges of the leaf.
Hope this helps 🙂
1 like
Complain
Similar Grow Questions
Solved
Dreamchvser
End of Flower, Yellow and crusty leaves ok ?Hey last weeks of flower and I’m not sure if it’s fine how they are developing, as I started flushing this week they quickly started developing yellow crusty leaves.
Should I keep flushing them as I will cut them in 1 or 2 weeks or should I try to balance out missing nutrients?
Leaves. Curl up
Leaves. Curl down
Leaves. Color - Yellow
3 months ago
4
2
Solved
ElBarto66
Gelbe BlätterMuss ich mir Sorgen machen, wenn die unteren Blätter gelb werden?
Die White Widdow Automatic ist jetzt in der 9. Woche.
Leaves. Color - Yellow
3 months ago
1
1
Solved
Smoth313
Yellow LeafsThats my sweet cheese auto start of week 8 and some fan leafs turn yellow. what can i do?
Week 8
Leaves. Color - Yellow
3 months ago
1
Solved
TrimQueen
STRESSED SOMEHOW?DO YOU NOTICE, DESPITE A LITTLE OVER FERT, HEAT/LIGHT STRESS ON THIS BABY? THIS CLONE HAS BEEN EXPOSE TO 24HRS LIGHT FOR AN EXPERIMENT. DOES IT LOOK LIKE IT'S SHOWING THESE SIGNS?
Leaves. Edges burnt
Leaves. Curl up
3 months ago
2
1
Solved
letmegrowinpeace
Please help me confirm Nitrogen DeficiencyDoes this look like nitrogen deficiency?
Leaves. Color - Yellow
3 months ago
2
3
Solved
Moondogz
Yellow Spots on Lower Leaves in Week 5 of Flowering – Nitrogen Deficiency?Hey friends, I have a problem with yellow spots on the lower leaves. People are saying it's nitrogen deficiency. It's currently week 5 of flowering, and I'm wondering if this is within normal limits and if I should just leave it as it is. Any advice on what to do?
Leaves. Dropping off
Leaves. Color - Yellow
3 months ago
1
2
Solved
ultra_violet
Tips turning yellowThe tips of the leaves are getting yellow. What does it mean? And what can I do about it?
I just replanted her a day ago. No nutes since then and not much before that either.
I attach two photos: the first taken today and the second - last week.
Week 5
Leaves. Color - Yellow
3 months ago
4
4
Solved
Snakeking
Outdoor grow Heat wave in early flowering!Heat wave again:(
What can i do ? In this situation?
The upper leaves became lighter green but the edge of leaves didn’t cruel upwards yet.
I put a fan and i will add another one because i think that clear plastice increases the temperature but i cant take it off for secu
Week 19
Leaves. Color - Yellow
3 months ago
6
5
Solved
TheNextGanjaMan
Deficiency, excess or soil problems?Hi, I need help, I have 4 plants of the same strain and several of the leaves are turning yellow and drying out. Some with a burnt appearance and curled upwards. I'm using a super soil, with water with pH 6.2-6.6 +/-. water with fert once a week for this flora. Fert Use 1xonce.
Leaves. Curl up
Leaves. Color - Yellow
Leaves. Color - Dark-purple
3 months ago
5
5
Solved
KingMickey
Burning Edges/Yellowing and Drooping?The yellowing has gotten worse and I'm noticing slightly burnt tips/edges and some droop. Could this be burn/deficiency or over/underwatering? A combination? Is there anything I can do to fix this early or is it just a matter of giving them some time and less nutrients? Thanks!
2 months ago
4
2
Solved
berlinbeginner
yellowing from the bottom. Help!SD3 - Humboldt sour diesel F28 is yellowing from the bottom.
Plant Info: I fed her with 900ppm biobizz nutrients,topdressed with worm castings and then sprinkled with diatomaceus earth to get rid of thrips.
Any help is appreciated. Thank you.
Leaves. Color - Yellow
2 months ago
6
4
Solved
Frnikola
What to do? → BF Runtz Auto - Day 42 - RH70, 80F in BioBizz Light SoilOn my last post, I was advised I have N tox, so I watered w/o BioGrow, just BioBloom and it's gotten much worse. The runoff EC was 1.5 (watered with 0.8, runoff pH was okay), so I’m guessing it's salt buildup. I plan to flush when this watering dries out—any thoughts?
Buds. Not fattening
Leaves. Color - Yellow
Leaves. Color - Black or grey
2 months ago
1
Solved
Bunterbiber
Leaves turning light green -- yellow (after 12h day/night rhythm)Since I started with 12h daylight/dark rhythm a lot of leaves started to turn yellow (older and lower ones first, some branches turned red). What I did:
PH value=6.5. I added CalMag--no effect. I flushed the soil --no effect. Do you have any ideas? Thx green thumb-friends 👏
Week 19
Leaves. Color - Yellow
3 months ago
2
4
Solved
OnlyAutos
far too Lightburn/stressedHey gromies🤓 If got a big problem with my Mars hydro tws2000, its too powerfull for my ladys
Leaves. Edges burnt
Leaves. Tips - Burnt
Leaves. Color - Yellow
3 months ago
3
6
Solved
ceomi69
Leave Tips Yellow and Brown on New GrowthThe leave tips of my plants turned yellow and burnt after i gave them a bottled nutrient feed (organic). Unfortunately i failed to measure the PH of the Water (it was probably to high). This was one Week ago and the New Growth still show signs that something is wrong.
Leaves. Tips - Burnt
Leaves. Curl down
Leaves. Color - Yellow
3 months ago
3
2
Solved
Namesnomnom
Upward curling leafs, burned tips, 2nd week of flowerSo I'm two weeks into flower now and my leaves are getting burned tips (I'm guessing nitrogen deficiency due to the light green of the leaves or some lock out) leafs are also curling upwards :/.
And some fading on some lower leafs.
Using biobizz roughly 10ml each
Any ideas
Leaves. Tips - Burnt
Leaves. Color - Yellow
3 months ago
2
Solved
Snakeking
Why my plant is in shock i fixed the ph of watering .I suspect of this reasons:Heat wave/changing phase to flowering / nutrient locked/ over watering/. InI lowered the ph of watering from 6.8 to 6.0 but this plant is still is shock and wont grow like others.
Could it be a sign of changing phase from veg to bloom ? 3 weeks ago my first plant went to flowering and did the same color fading. Now that plant has good color
Week 18
Leaves. Color - Yellow
3 months ago
2
2
Solved
Vril_Ya
Root rot or pH imbalance?This blueberry muffin (f) plant was doing well until last week when it started deteriorating. Its grown on a mix of cocopeat, vermicompost, perlite mix and fed on compost tea and cal-mag mix. I might put it down eventually but I checked the pH and it was 5!
Leaves. Edges burnt
Leaves. Color - Pale
Leaves. Color - Mottling
3 months ago
4
2
Solved
infamous8803
Leaf discolorationI just noticed some leaf discoloration. What could it be? Just entered 2nd week of flower using roots organic lush soil. Top dressed a week ago with terp tea grow and bloom. I use r.o. water also using urb and fish shit every now and then. Is this a deficiency?
Leaves. Color - Yellow
Leaves. Color - Pale
3 months ago
1
5
Solved
losgrowershermanos
Slow-Growing Plants with Pale Leaves Turning Yellow - Need Advice!Hey friends, I need your help. My two plants, over a month old, are only 5 cm tall, with very pale green leaves. The temperature has been normal for three weeks, but the lower leaves are turning yellow. Any ideas? Check my profile for photos!
Leaves. Color - Yellow
Plant. Too short
3 months ago
1
6