Spots on Leaves

[DKforJC]

i have a few plants I am growing outdoors in pots. The soil is Black Magic with some perlite and vermiculite. Plants are about 7 weeks old but have started to develop some sign on the leaves that are troublesome. I have recently treated the plant with SM-90 spray. PH of soil is a little high at about 7.0. I’ve been feeding with Black Magic nutrients part A and B about 1x per week. Any help would be appreciated.

[FlyingDutchPaddy]

hi DKforJC ,

those spots look somewhat like the ones on mine, though mine are in DWC/Hydroponics.
i'm thinking Calcium / Magnesium deficiency for mine, need to get calmag supplement to be sure.

have you looked at the diagnose you plant section?

how much you watering them?

side question: did those leaves in 5th picture drop by themselves?

[D.A.A.S.69]

Hey DK, have you checked for bugs ? Some of that damage, looks to me like it could be from pests,
Look under the bottom of some of those bad leaves?

[DKforJC]

The leaves did indeed drop by themselves. Been waiting until upper 1” dries before watering. The soil dries out pretty quick. I originally thought pests as there were whiteflies and fungus gnats nearby due to vege garden. Had rose bushes in vicinity which had a fungus on them as well. I treated the plants with SM-90 and got rid of the rose bushes this weekend. So I suspected pests and/or mold. I might try letting the plant dry out more before watering and will look into cal/mag.

[DKforJC]

The yellowing bottom leaves continues. I noticed some of the tips have brown like Nute burn but the diagnosis section points to nitrogen deficiency. I’m afraid to add nitrogen at this point and have been only using water. I haven’t reapplied SM-90 because I already applied the monthly limit. Any help? Attached are a few new pics

[FlyingDutchPaddy]

Looking at those pics, a few options seem plausable based on the Plant Doctor guide.
Sulfur Deficiency - https://www.growweedeasy.com/sulfur-deficiency-cannabis
Manganese Deficiency - https://www.growweedeasy.com/mangane...iency-cannabis
and indeed, Nitrogen Deficiency - https://www.growweedeasy.com/nitroge...iency-cannabis

Are they still in Veg state or flowering?
If Veg, can't really give them enough N (from the nitrogen page: Vegetative Stage – higher levels of Nitrogen (pretty much any plant food will do) )

[D.A.A.S.69]

@DkforJC,, Morning love your name, your plants look fine to me, all the new growth looks good,.
Yeah, I'd just keep an eye on them, for a while, the sun is ruff on plants, in places.

[FlyingDutchPaddy]

Hi DKforJC , hows going with the plants?