In article ,
Peter Jason wrote:
A vacuum will hold up a column of water about 10
meters, so how does water get to the top of very
tall trees?
Peter

The water isn't held up by vacuum (actually the external air pressure, not
the vacuum per se) but by capillary action in series of very fine tubes.
The cohesion of the water molecules to each other is what keeps the
water up and rising as water evaporates from the periphery of the tree.

N.B. This is why you cut off the bottom of flower stems before you put
the bouquet in water.