Newly planted trees?

We just planted four small 3ft abrovitaes a couple months ago. They look fair but have a little brown leaves on the bottom. Does anyone have any recommendations on something that will give them a boost perhaps some type of fertilizer sticks or something?

2020-10-27T04:59:53Z

United States (Maine) 

Girlie Electrics2020-10-25T13:03:28Z

Arborovitae (Red/white cedar) will recover, but probably in the spring.
It's not like many other conifers which don't re-grow from "old" branches. 

Tavy2020-10-25T12:13:51Z

Which Country? In the 
U.S and U.K. it is the end of summer, trees go to sleep for the winter, they stop growing and leaves fall.