hi everyone :)
I'm new to the site and very much a novice at cultivating roses and other plants. I wanted to ask for help salvaging some cuttings I planted recently, if at all possible, since a family member received them on a special occasion.
I planted the cuttings in a pot a month ago or so, using universal soil and placing pebbles on the bottom of the vase for drainage. Since I live in an apartment with few places for plants outside, I kept them inside, in a well lit but moderately damp room. They seemed to take root and began to produce leaves, but they were infected by a whitish mildew from another plant, and I made the mistake of trying to kill it with a solution of water and 5% vinegar. I think I used too much of it, and I even applied it on the stems where I saw bits of mold.
Since then, the stems blackened and lost the leaves. Only part of one remains green, with slight streaks of black. I'm using garlic water for the mildew, although it reappears every few days.
Is there anything I can salvage, even a small piece from the underground part?
If so, how should I proceed? Any products I should buy? I could free a place outside if needed, the temperature here never goes under 50°F.
I know it's a desperate endeavor, but thank you for reading this and for any eventual advice.