This spring, I planted a weeping willow tree (salix x) in my yard, in an attempt to help dry things out. I'd heard they love wet conditions, and can grow up to 8' a year. Well, it has been almost two months, and my tree has not grown. It has turned yellow and developed dead areas on the leaves and stem-tips. My first thought is, maybe it was too much of a shock to move straight from the 16" nursery pot into the saturated soil in my yard. The tree was a little over 6' tall. Is this the problem? How can I relieve the shock?
Apparently, it was transplant shock caused by the big change in soil moisture content. The ground has now dried partly (still very damp, but not saturated in the top 4 inches anymore). As soon as that happened, the tree grew quickly (4-10 inches, in different areas), and the new growth doesn't show dead tips/leaf spots. It also has increased leaf size, and is a couple shades darker green.
Trees should ideally not be planted directly into saturated soil. Trees that can grow in these conditions should be adjusted slowly, sort of like hardening off. (And I know the tree should be staked. I'll get around to it. The stake in the question was placed there by the kids, and was removed for girdling reasons.)
They need moist soil down 2" if saturated below that you need to check roots, they will stop drawing water if saturated. Give the roots exposure to air a day or two to dry them cover with soil they should start drawing water again, have your soil tested for salt... nutrients. One more thing is to check under the leaves for insects. Hope it helps.