BigBill said:None that will tolerate standing water. They are trees, not pond plants.
sedumzz said:Weeping pussywillow is a good choice.
I don't know if my variety is the most common or considered wild, but it literally grows so quickly every year that even when trimming back to the top in late spring, it grows like a mop onto the ground, making a lump of leaves and fuzzies spanning 4 feet in diameter, one feet on the ground. And yes, I trim it FULLY back every year winter.
sallyg said:Might we back up a little? A landscaped area next to a patio.. do you really have room for a tree .. maybe you are no longer thinking weeping willow, dawn redwood..?
Having made many mistakes over the decades, I hope you consider more than "I had a tree, it died, I must plant another tree"
Do you really have to have standing water next to your patio? Where is this coming from? Does that mean standing water close to the house?
(Apologies if you feel I have ignored your question. Just hoping to help guide to a good answer)
I think that the bottom line is that there is no small tree that will thrive there. For some reason you might have a very high water table right there due to the slope of the land forcing water to collect in that spot. It would probably be worse in years of above normal rainfall.