yes that can happen. if the cutting moves in the soil easily (try slightly wiggling it) its rotted at the bottom and its a loss. if the cutting is solid in the soil, try raising the temperature of the soil or ambient air around it. if still no progress try giving it a little liquid fertilizer, i like compost tea. you can also carefully slide the pot off to check for roots, i like clear cups so i can see if any roots are forming. some varities are easier to root than others, hope that helps!
Great demo, thanks! I sprout different kinds of hardwood cuttings from trees, shrubs, etc. some I just leave outside over the winter here in PA and others I sprout indoors - some with a heating pad and lights, others without. Right now I have forsythia, viburnum, rose of Sharon, sycamore and just today I cut some year-old growth from a beech tree. In the next few days I’m cutting apple and peach and Russian sage. I usually use just sand or compost. Potting soil is too expensive if you’re growing a lot of cuttings. Then I’m gonna chill for the rest of the winter and wait for spring. It’s going to take a lot of containers for all those sprouts. Keep up the good work, yes, it’s a nice hobby!