The Grow Awards 2026 🏆 
Is this calcium deficiency ?
GoldenWeedGrowerstarted grow question 5y ago
it seems calcium deficiency to me. Am I right or not ?
likes
TheUk420Showanswered grow question 5y ago
certainly looks like it my friend :) your bang on. though I would check your soil is getting enough oxygen too that can have similar symptoms. shes a big lady I'm not surprised good training job :)
Similar Grow Questions
Solved
Mitrafiend
Zkittles light sensitivity? The nature of LED lighting?Has anyone that is growing Zkittles notice this plant sensitive to over-exposure of light? my first time growing this strain and I was getting what looked like severe Calcium def at the tops. Moved it up to 18” and 60% and they look beautiful and happy. Photone reported 1100ppfdWeek 3
Leaves. Color - Yellow
4y ago
2
5
Solved
Horseluisweed
21 dias desde cotiledones, veo que las hojas de abajo están destiñendose, quiero hacer incidencia en que hace 5 días que no riego, xq aún noto pesado y humedo el sustrato(hice un riego de 125ml) os mando fotos, y tb un saludo a todos, de como me acompaño anoche en el salón ❤️🌱Week 3
Leaves. Color - Yellow
4y ago
3
3
Solved
Topdog
Nutrient lock out?Does this look like a nutrient lock out?Week 8
Leaves. Color - Yellow
5y ago
2
1
Solved
Ferinky
Carencia en hojas nuevasQue carencia puede ser? Estaba con la maceta de 3L y necesitaba el trasplanteWeek 7
Leaves. Color - Yellow
4y ago
3
3
Solved
aBUDabove
Leaf Diagnosis NeededI need help. Leaves are turning yellow at top of plant only. And only on American Pie. Not Northern Lights. I am using a Sonlipo SPC2500. Bloom mode. Is it possible to have lower ppfd levels and still get light burn? Thanks in advance.Week 9
Leaves. Color - Yellow
3y ago
6
3
Solved
Misanthrope
Strange yellow patchesThis is a new one for me, sont think I've ever seen discolouration like this before. My first thought was having left some nute solution on her leaves after feeding but pretty sure I've ruled that out and more leaves have begun to show the same discoloring. Any advice appreciatedWeek 12
Leaves. Color - Yellow
3y ago
2
5
Solved
PickleRick
Yellowing edges of top leavesWhat's going on with these leaves? This little lady seems to be strugglingWeek 3
Leaves. Color - Yellow
4y ago
2
4
Solved
CoronaGrower
2 Yellowing Fan LeavesI have 2 large fan leaves from the main cola turning yellow and 1 almost looks crisp or burnt on the edges.
It is only 2 of the leaves and by my reckoning, they are 2 of the oldest leaves on the plant.
From research, it could be the bump in nutes or water issue.
Any ideas?5y ago
1
1
Solved
throwaway22
orange sherbet crispy leaves. Close to harvestFastbuds Orange sherbet first grow. I already harvested this plant but I’m curious what the issue was. The leaves were yellow and crispy to the touch. Other leaves looked fine. 2.5oz harvest but it dried really fast(7 days) and now smokes harsh. Don’t want to repeat this mistake.Leaves. Color - Yellow
Leaves. Color - Pale
4y ago
4
4
Solved
PoleKat
One leaf yellow spotsHi guys, just came across this leaf today one of the lowest ones on one of my plants. None of the other plants seem to be affect nor any of the other leaves on this plan. Can’t seem to find it on list of deficiencies as it presents different. Any thoughts? Thanks guys!Week 7
Leaves. Color - Yellow
5y ago
4
Solved
kevzzz
Is this sight yellowing normal or cause for light concern? No nutrientsDoes it look like the new leaves on my 7 day pictures are slightly yellow? Or is that relatively normal with new growth? 20% perlite, 30% coco, 50% organic potting mix. Been really light handed on the water. waiting until soil is completely dry before watering more (1-2 days)Week 1
Leaves. Color - Yellow
5y ago
2
1
Solved
freecana
Top is yellowIs it look like light stress? I already move up light... Just want to know when they will look green again...Week 6
Leaves. Color - Yellow
5y ago
3
5
Solved
TopNotchBud
Whats wrong with her?I cant tell what's wrong with her. I recently upped my CalMag nutrients cause I originally thought this was a Calcium deficiency (full nutrient breakdown in diary). I dont want to hinder my harvest so any insight?Leaves. Color - Dark-brown
Feeding. Deficiences
5y ago
2
2
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.2y ago
4
3