Hi, I am new to this forum, new to growing cannabis. In short: I have one plant that is doing terrific and one that is sick. I have looked to diagnose the issue from other posts, photos etc, but in the end I'm confused.
The longer story:
I started with the idea of wanting to grow a couple of plants outdoor in my backyard, just a casual grow, no big deal (I'm in SoCal). Turns out this is really fun (except for the sick one).
I began with 3 seeds - Tangerine Dream (auto fem, auto flower). The seeds germinated just fine, I put them in small peat pots and when they were showing roots I figured they were ready to plant. I gave one to a friend, then planted one in a pot with Natures Care potting mix (yes a Miracle Grow product, from H Depot). This one is growing like crazy and other than some leaf hopper damage that I addressed with insecticide soap, looks perfect, still has all it's first leaves and is well over 2 ft tall after 6 weeks.
The 3rd one, the problem plant, I planted in a flower bed, after digging out a pot sized area and filling with some small rocks, sand and then some organic planting mix I had (don't remember what it was). The first leaves dropped after it had the ones above it - it appeared to have nitrogen deficiency (internet photo diagnosis) so I got the FFarms trio. Bugs attacked it, so I used the soap, then I saw some sort of slick stuff on a small portion of it and used some Dr Earth insecticide, which seemed to have gotten rid of that (maybe broad mites?). Leaves are damaged, growth is stunted and it appears that the new sprouts from the top middle of the plant are tiny. I moved it to a pot with some more of the Natures Care mix just the other day. Not sure if it's going to recover but I'd really like to know if anyone has any thoughts/suggestions.
Here is the healthy one:

The longer story:
I started with the idea of wanting to grow a couple of plants outdoor in my backyard, just a casual grow, no big deal (I'm in SoCal). Turns out this is really fun (except for the sick one).
I began with 3 seeds - Tangerine Dream (auto fem, auto flower). The seeds germinated just fine, I put them in small peat pots and when they were showing roots I figured they were ready to plant. I gave one to a friend, then planted one in a pot with Natures Care potting mix (yes a Miracle Grow product, from H Depot). This one is growing like crazy and other than some leaf hopper damage that I addressed with insecticide soap, looks perfect, still has all it's first leaves and is well over 2 ft tall after 6 weeks.
The 3rd one, the problem plant, I planted in a flower bed, after digging out a pot sized area and filling with some small rocks, sand and then some organic planting mix I had (don't remember what it was). The first leaves dropped after it had the ones above it - it appeared to have nitrogen deficiency (internet photo diagnosis) so I got the FFarms trio. Bugs attacked it, so I used the soap, then I saw some sort of slick stuff on a small portion of it and used some Dr Earth insecticide, which seemed to have gotten rid of that (maybe broad mites?). Leaves are damaged, growth is stunted and it appears that the new sprouts from the top middle of the plant are tiny. I moved it to a pot with some more of the Natures Care mix just the other day. Not sure if it's going to recover but I'd really like to know if anyone has any thoughts/suggestions.
Here is the healthy one:
