I have a wooded area in my back yard which is a "low lying" and wet area. There's a brook/stream that runs across it.

For nearly 20 years, I've had a number of large tulip poplars which have bloomed every year until this year.

Last year, around this time, there was a very large deluge which left a HUGE amount of sand, rocks, etc etc in the yard..... it's been unblocked and redistributed but is still several inches higher than in years past. ground cover hasn't yet grown in over what was the deepest pile of sand/rock......

As of this July (today) only, of the 5, one has leaves and only scattered in smaller branches up the main trunk.

Will they recover? How long should I expect to wait before I panic?

thanks in advance.