I live in India, its summer here right now, I had ordered 3 roses from a Nursery Online, they've sent me the roses in a bad packed condition hence I had to trim them off because of all dried leaves. I potted them separately, however as I had trimmed most of the dried leaves off the rose plant, they are growing up with new leaves, (the small ones). Problem here is that some of the new growths (the leaves) are drying up even when so small, and dropping down.

What could be the reason behind this?

I don't want these roses to die.

Please help :(