Hello!
To answer your question regarding your rose cuttings, I would suggest moving them to the greenhouse so as to provide a warm, humid environment for them. If you would like to keep them in your kitchen, place a container over the cuttings to provide that extra bit of humidity to help them thrive along with a source of heat (be careful not to roast the roots!)
As far as I can tell, you’re already doing a great job in providing good conditions for them as is but, this will give them a little more encouragement. You can check out our page on rose propagation at https://www.planetnatural.com/rose-gardening-guru/propagating/ as this goes in to a bit more detail.
Happy growing!