Calcium deficiency?

[Inthefield]

Week two of flower or so, in soil, plants, especially fan leaves, starting to pale, and show signs of deficiency in something. See photos. Any tips? Thanks in advance.

 

[manfredo]

Looks more like a magnesium deficiency to me...but they often go hand in hand. Many strains need a lot of mag. during flower.

How to fix Cannabis Magnesium Deficiency (Mg) Pics & Symptoms

Does your cannabis plant have yellowing lower leaves between the veins? See pictures of a magnesium deficiency and learn the easy solution.

www.growweedeasy.com

 

[manfredo]

and / or....I meant to say potassium and magnesium def. often go hand in hand

How to fix Cannabis Potassium Deficiency (K) Pics & Symptoms

Leaves with a potassium deficiency have yellow, brown, or burnt edges and tips. It may look like nutrient burn, but the leaf margins also turn yellow.

www.growweedeasy.com

 

[youraveragehorticulturist]

I agree with manfredo about lack of magnesium, maybe K. For me, calcium deficiency shows up as small round spots near the bottom of leaves vs the ends/tips of the leaves.

Are you just in soil, no nutrients or anything else new since you started flower? Sometimes high Phosphorus bloom nutes can lockout magnesium, even though there is "enough" in the soil.

 

[Treespiker]

Week two of flower or so, in soil, plants, especially fan leaves, starting to pale, and show signs of deficiency in something. See photos. Any tips? Thanks in advance.

I see you joined less than one hour ago, so here's a tip: This is the wrong forum. You should have posted under "Marijuana Plant Problems".

 

[Inthefield]

I see you joined less than one hour ago, so here's a tip: This is the wrong forum. You should have posted under "Marijuana Plant Problems".

Thank you!

 

[Inthefield]

Week two of flower or so, in soil, plants, especially fan leaves, starting to pale, and show signs of deficiency in something. See photos. Any tips? Thanks in advance.

I agree with manfredo about lack of magnesium, maybe K. For me, calcium deficiency shows up as small round spots near the bottom of leaves vs the ends/tips of the leaves.

Are you just in soil, no nutrients or anything else new since you started flower? Sometimes high Phosphorus bloom nutes can lockout magnesium, even though there is "enough" in the soil.

I agree with manfredo about lack of magnesium, maybe K. For me, calcium deficiency shows up as small round spots near the bottom of leaves vs the ends/tips of the leaves.

Are you just in soil, no nutrients or anything else new since you started flower? Sometimes high Phosphorus bloom nutes can lockout magnesium, even though there is "enough" in the soil.

Thanks you guys. I’ll do more research along those lines. In soil, with Gaia and compost. Had them vegetative in the greenhouse then brought them under lights. My last crop had the same problem though near the end though, so It must be something I’m short on.