The Grow Awards 2026 🏆 
Calcium deficiency
clik2121started grow question 3y ago
is this a calcium deficiency or ust heat stress the other day i put my dim at 65% 16 inches
i got a run of of 5.5 i put in 5.8 feed
i think its just heat stress from the light as once i left it 65% im just making sure because i dont know
seems like it hopefully
Open
Leaves. Color - Dark-brown
likes
Answer
GrowingGrannieanswered grow question 3y ago
Heat stress... the canoeing of the leaves... the other problems I'm seeing (early signs of a calcium deficiency and a very light green color) come from your pH which is much too low for a soil grow... get it up between 6.0 and 6.5 otherwise nutrients (like calcium), which are already in any decent cannabis nutrient formula, will not be available to the plant and you'll end up with a deficiency. Solve it now before it starts or need to take more labor-intensive efforts to solve it later.....
Good luck...
likes
Complain
Similar Grow Questions
Solved
Smokingthatdank420
Can someone help me and tell me what I need to do to get rid of the little brown spots in my leaves? Thanks.Week 6
Leaves. Color - Dark-brown
7y ago
2
2
Solved
JeyGanesha
Macchie di ruggineEcco adesso si vedono le foto. Growers ho trovato delle macchie di ruggine su 2 foglie della Apple strudel.da cosa dipende??Leaves. Color - Dark-brown
1y ago
2
Solved
Smokeyboar
leafs problemIs this a cal and mag problem or nutrition problem over feedLeaves. Color - Dark-brown
5y ago
3
Solved
Eotrio
Brown spots on leavesi got those brown spots on my leaves and cant quite get on why they are there, im sure i watered enough biobizz calmag, so i dont think its that, the second plant looks just fine, meanwhile the plant with the brown spots have a lot more trichomes, really weirdLeaves. Color - Dark-brown
3y ago
1
2
Solved
guerilla
Calmag deficiency?Hi all.
Almost certain what this is. But just need reassurance please 🙂
I just need to confirm this can be fixed with calmag?
💚Leaves. Edges burnt
Leaves. Color - Dark-brown
Feeding. Deficiences
4y ago
4
5
Solved
BrannabisTHC
Toxicity?Hey growers
This Purple Haze is showing some discoloration at the edges and tips of her leaves
It's week 3 of flower
Water with a PH of 6.0Leaves. Color - Dark-brown
4y ago
1
4
Solved
elevensixty6
Deficiency?? Excess? Neither?Grown this strain before and had the same issue.. not sure if its a CalMag deficiency entirely. pH has remained at 6.0-6.5 or so in soil and didnt show signs until recently, seemed to have worsened after just two days of only CalMag and Ro water so I bumped up the bloom nutes.4y ago
3
3
Solved
ThePotFactory
Ive got a few dots showing up on one of my plants. Could this be because of the cold??Week 2
Leaves. Color - Dark-brown
8y ago
5
6
Solved
Heman17
Lower leaf brownDoes anyone know what this leaf browning on lower leaves is? ThanksWeek 2
Leaves. Color - Dark-brown
4y ago
1
2
Solved
G_news
Cal def ?Calcium deficiency?
Iv been using cal mag for a while now one tablespoon for 3 gal bucket. Thank youLeaves. Color - Dark-brown
4y ago
2
5
Solved
N_e_O
Send HELP!I wonder if this yellow ton and even starting the orange should be from the strain of is getting burn? What can i do? reduce sun light? should i start feeding with veg suplement?Leaves. Color - Yellow
Leaves. Color - Dark-brown
5y ago
1
1
Solved
GardeningDoug
Leaves looking f’d?What’s happening with these leaves? It started last week and has spread. Only the leaves in the middle under the light. Week five of flower. Was using the same nutes and strengths since flowering started at 6ph. Upped the strength this week to see if it would fix and it got worseWeek 14
Leaves. Color - Dark-brown
5y ago
2
Solved
Bryankush
FoglieHo un problema alle foglie sapete cosa sia? Ho provato ad alzare i led a 50cm per vedere se sia quello il problema. Voi cosa dite?Leaves. Edges burnt
Leaves. Color - Dark-brown
5y ago
2
3
Solved
Dillsnills
Some of the leaves on this one plant have brownish rusty spots on em jus looking for some jelpmplzzWondering what deficiency or nute burn or what is going on with this plants, a few of the leaves have minor tips that look brown and have brown kinda rusty spots on em, advice input opinions greatly appreciated. Orange Sherbert Auto, 3rd wk flowering,ph6.5, nute last feeding.Leaves. Curl down
Leaves. Color - Dark-brown
Setup. Strain - Autoflowering
5y ago
3
3