# This seed is indeed the smallest of all seeds

Mustard seeds were the smallest seeds known to the original hearers. (See: [[rc://en/ta/man/translate/figs-explicit]])

# But when it has grown

"But when the plant has grown"

# it is greater than

"it is larger than"

# becomes a tree

A mustard plant can grow about 2 to 4 meters tall.

# birds of the air

"birds"