We have put in sp far around 60 leyland cypress trees around the front of our property. We put them in back in early summer. They have done great so far, but lately we have had an abundant of rain. Now the trees are turning from their normal dark green to more of a yellowish green. Our soil is made up of alot of clay so I know the ground is retaining too much water. Is there anything I can do to help correct this, or will they heal over time? I have another 180 that I am ready to plant, but want to make sure they will be ok first.