Alright, you guys made me consult a book on this. lol
Root pressure will allow a plant/tree to push water through about 30 feet of vertical height. However, it turns out that capilarity or capillary action will allow cuttings (no roots) of plants to draw water through about 19" of vertical height. However! The story doesn't end there because even with roots providing pressure, many plants and trees grow well over 30 feet in height right? Well a dude, botanist Henry Dixon, came up with a theory in 1914 called the Cohesion-Tension Theory, otherwise called 'Transpirational Pull' to explain how plants can move water over distances greater than the 19 inches that capillary action works and the 30 feet that root pressure provides. However, it still doesn't end there and it turns out that it is rather a mystery on how plants do it even after over a hundred years of botanical research. lol
But the moral of this story is: cuttings can and do indeed pull water up through their stem in the absence of roots - up to 19" in height due to capilarity alone and then even higher due to the cohesion-tension properties of water. Which, as it turns out involves the processes of transpiration that occurs in leaves.