N or P def(?) + drooping, reddish stems(?) + yellowing leaves = noooooo!(?)

It's been raining here a lot lately, except for the last few days, so I went out to check on my baby and I was surprised to see that so many of the lower node stems were bending downwards with yellowing leaves, reddish/purple stems, and some gnarled upper leaves...

I just found out that it IS indeed female (just started sprouting the white pistils/hairs), and I'd really like to keep her alive :'(

I've been doing an exclusively organic grow so far by just using various plant/vegetable scraps (compost from home), and I believe that since it's going into it's flowering stage it needs more phosphorus...so I'm really thinking about using some orchid fertilizer that we have, which is 15-35-10, but I'm not sure if it will affect the taste of the buds if it survives long enough...

I couldn't take any pics when I went out earlier because I wasn't expecting to need to bring a camera, and it's dark now...so I can do that tomorrow...

But can someone please let me know if I need to provide more information or if the reddening/purpling of the node stems is normal? I've gone through spider mites and other yellowing of the leaves (which I took to be an N deficiency?), but this drooping seems pretty serious...I was thinking "too much water?", but the soil was dry.

Droopy leaves very likely could be from water\too much\not enough.

Okay, I just read something about it maybe being heat stress?!
It's been in the high 80sF/low 90sF lately, but still a bit breezy...should I make some sort of shade for it?

I know that I need to transplant it to a bigger pot, but I don't want to stress it too much while it's looking like this...dammit, I should've put it in a 5gal pot a week ago...

Well the temp outside may have been fine but if the pot is in the sun then the pots temp gets hottt and it bakes the roots.
Shade the pot not the plant.

yeah, that makes some sense as it's currently in a black pot...
i'll make sure my 5gal is one of the white or yellow ones.
i'll check up on it tomorrow to see if there's any improvement and hopefully i'll have time to transplant it.

thanks for the help so far.

or the ph is out and theres a lock up????

Where you at in FL?
Got any pics?

A bit North of WPB.
I've got a few not-very-impressive pics.
I just added a pinch of epsom salt (for Mg deficiency?) and a few 18-10-16 fertilizer bead ball things for the first time (waaayyy under the recommended dose). I haven't ever added any fertilizers, but I think I'm beginning to need some...so I'm starting slow.

Looks like a nitrogen def to me. Either too much or to little. Also i would transplant to a bigger pot or ground once this problem is resolved. Also goto rain water or check the PH of what your watering with. It's the little things that count

Hank.

Yeah, it has only been getting rain water lately and I do plan on transplanting it tomorrow into either a 5gal or some other large pot that we have so that it can spread its roots a bit.

I'd most likely go with N deficiency, as I haven't used any chemical fertilizer before today, and today I only used 1/16th of a tsp (about 5-6 fertilizer ball things), so hopefully that'll help. So I highly doubt it has anything to do with nute burn...because that wouldn't make any sense.

I also came across Mg deficiencies, which also yellows the leaves and cause them droop and curl, so I added another tiny pinch of epsom salt (magnesium sulfate) to try to counter that.

The stems are also a bit reddish-purple, as you can see in one of the pics with the yellow leaves, so I think that may have something to do with not getting enough P or K...?

Tomorrow will hopefully be a revealing day.