I would do as Sharon suggested and get them into shade as soon as possible. Use nothing but water on them until they recover. In a few weeks they should put out new leaves for you. This part is hard I know but remove all of the buds and let the plant use its energy to recover. Once no feeding or anything but water. In your environment I don't think I would ever use an oil based product it's just to easy to burn them. I've burned my leaves with neem and I sprayed in cool weather on a cloudy day. The best and safest way to get rid of spider mites is with water. If you have a sprayer fill it with water. It is easier to get the bottom of your leaves this way. Or a hose with sprayer then mist the whole plant. Be sure to concentrate on the bottom of leaves because thats where they live. Hope everything goes well for you. Be patient with your roses. In your heat shade will most likely be needed. Mist a few times a day as well. If you can get any daylilies put one by each rose spider mites love daylilies. They have not gotten on my roses since I planted the daylilies.

I think most rose growers have done something similar to what you did. I myself have competently defoliated about 23 rose bushes. I put too much dish soap in the sprayer, it was as if I used agent orange. In a matter of hours the leaves were just falling off and the ones that were left turned yellow then fell off. Yours will come back(mine did) just don't do anything but water and monitor for awhile.

I've done this also in the past... Some shade if possible and water....Best of luck for a fast recovery!

Yeah, I think we've all done this before. Good advice above. Just give them time to get over the shock, and hopefully they'll put new growth on in a few weeks. As long as the stems are green, it should be fine.

Thank you so much. I didn't try to do the shade cover since it's the 4th day now and whatever left, it stands strong. I have 7 rose bush, and I went thru the meticulous process of spraying and washing my my hand every single leave left. Stems Are green as you said.
I didn't increase water in term of watering if that's what you mean. if water ans in rinsing the rose, yes, been doing that.
I have 1 question: One of the rose has a perfect shape, like it is fanning itself out to a round shape, my favorite one. It was so healthy that I didn't even to trim any stem off. Now the defoliation happened, will the leave grow back on same stem, or they will spring out new stem? I'm concerned because I particularly love how that young rose look.

I forgot the flowers and bud. I will remove my Emmanuell Gulliot and Sister Emmanuel , too. The fairy itself, already lost whatever it lost, and the other keeps blooming. Should I remove it, too or leave it alone.

on a note regard pressure spraying: I don't have it and I will save for it.

I will have 3 more rose coming from the same importer. She always have spider problems and really spray too much. In my 1 year rose growing, neem oil is the thing that truly kill the spider and their eggs ( the white powdery on the leave back ). I never see leaves are so clean! Do you think it's safe if next time I use a more dilute sollution, then keep them in my bathroom which has indirect light?

Depending on the damage to the stem is whether or not the leaves will grow back on that stem. I killed a whole plant once with the neem and that was when I was told not to do it in my climate because of the heat. However, if your stem is still green then it will probably be ok and leaves will come back. Don't get scared if the leaves come out slightly deformed the first time they come out. Eventually, it will straighten out.

As for spraying and keeping in the bathroom, I don't have an answer, I have been told not to keep them in doors. I personally have not tried it.

I would stay away from the bathroom idea. I treat roses as I would like to be treated and spending 24/7 in the bathroom does not sound healthy

good news, I see 2 new shoot, with 3 tiny leave on my rose today. 2others have new leaves on top, too and yes, they're deform as if they're infected but it will pass. I'm relieved! I actually gave them the banana juice + fungi I made which they really really love ( no chemical in there ) . I give that to them every week, or 2 weeks. The next time I sratch the dirt to give them some more, the banana is always gone. I also have earthworm in the pot to ensure the nutriion + air inside the pot, I suspect the banana is a good feed for those not so much loved but very helpful creature!

Not meant to ignore advice, but what I meant to keep them in bathroom because: It has sun, indirectly though. I can keep a fan for air circulation, and not to keep my rose in there for too long. May be 2 days to make sure they're not burnt. And guess what, I can use my shower head which has pressure pump to spray all the neem oil away before putting them outside again. Well, I hope I don't have to use neem oul any time, soon!

Or, how long you think it's sufficient for the oil to work, like to kill spider mote, thiprs, slug, their eggs...? I can just spray at 7pm then rinse the rose off at midnight?

It's better to spray the bottom of rose leaves with water every few days. Spider mites hate water.