you can do it. and it will work in due time.
but time is the name of the game. and a good
sucess rate of cuttings developing roots is important too.
Take a cup that nots clear, you don't want any light to get in
I wouldn't use tap water "city water"
use distilled or Well water.
fill the cut with water, put a piece of plastic wrap on top
poke a little hole for your cutting
put your cutting in the cup
put the cup in a warm place not to warm you only want the water
temp to be a max of like 86, if it gets to 90 your pretty much screwed
and not to much light.
You need to change the water like ever other day
you need to mist the cutting every day with water
or a week foliair spray.
some are gonna die some are gonna root, but it's gonna
take a while for it to happen so don't hold your breath. if it take
14+ days.....
You can use Willow branches to make a rooting solution
I've never tried it but i heard that it works.