# the stump of its roots

This is the part of the tree that is left above ground after a tree is cut down.

# in the middle of the tender grass of the field

"surrounded by the tender grass of the field"

# dew

the moisture that settles on the ground in the mornings

# animals in the field

"wild animals in the fields." Here "the field" is places where the plants that grow there are useless to people.