Wow this is scary, need help fast.

I have mostly sativas in their 42 day of flower. This is my first grow. I got a powdery mildew and was pretty aggressive with bicarb of soda. I was sure it was a hot enough day, but three small plants immediately went to rot.

I have destroyed them, and cut away everything I can find that I'm sure is rot from the big plants, but there are too many variables. I had recently given them a bigger than usual shot of nutes, and some could be burn. Some of the spots where the top hairs are really turning brown, could be because they are somewhat shaded, and now fully mature???

The plants are outdoors, and recently under a translucent tube cover because of afternoon thunder showers. They are all in 10 GAL. + pots.

I really want the soda residue off, but I'm SCARED SPITLESS to add foliat water at this time given what it did with the soda!!!!

Thanks for your expert input to save my ladies while I save my kidney!

Them dont look so hot. I will let a outdoor expert chim in but.... It looks to me like you have some pretty bad spider mite issue or some sort of bug. Any webs?

try foliar feeding with water + fungus killer, and water them with a fungicide too. i wouldnt leave anything on the leaves.

nick17gar said:

try foliar feeding with water + fungus killer, and water them with a fungicide too. i wouldnt leave anything on the leaves.

Click to expand...

No webs no bugs. The white stuff on the leaves is all bicarbonate of soda residue.

Here are some pictures of the "airiness" of the cover, and of my little buds which look fine (to me) except for the rust colored spots. (and soda residue)

No body has any idea?????

those purple leaves are from cold temps at night(below 65). the lime green color of the plants says that your lacking some N, and the brown spots are calcium deficiency.

P getting clotted with cold temps
View attachment 1797504


early N deficiency(lime green)
View attachment 1797505

compared to a healthy plant


calcium deficiency
View attachment 1797507


I recommend you feed your plant. and also add in some cal/mag every 3rd watering(molasses contains cal/mag/iron too)