Trouble with Evergreen Arbovitae
I live in West Texas which is very close to a desert climate. Temperatures vary throughout the year from teens in the winter to 100's in the summer.
Three months ago, I planted 4 6-7' Evergreen Arbovitaes. They were planted about 9-10' apart. The first one died within a month. The other three have been fine for the three months, but now all seem to be dying. The leaves/needles are turning yellow, but there is still some green.
My soil is calichy with red clay. I dug a hole for each approximately 2' deep by 3-4' wide. After loosening the root ball, we filled the remaining hole with 90 percent tree and shrub soil.
Because the weather has changed and gotten hotter (about 10-15 degrees) than the previous three months, we have been watering everyday, sometimes twice a day, thinking the plants were initially dying due to lack of water with the increased heat. It has been 4-5 days and there has been no improvement.
Please help!!!! I don't want them all to die. How can I save them?!?