What was the name of the garden where God placed Adam?

Answer: Garden of Eden

The LORD God planted a garden in Eden, in the east, and placed the man there to cultivate and keep it.

“And the LORD God planted a garden in Eden, in the east, where He placed the man He had formed. Then the LORD God took the man and placed him in the Garden of Eden to cultivate and keep it.”— Genesis 2:8, 2:15 (BSB)