We just found Morel mushrooms [View all]

growing in one of our garden beds. There's about eight good
size shrooms found under the burlap we placed last Fall.
What can we do to encourage more to grow next year or whenever
they are do to come up again? My husband wants to just plant
in the box as we normally would. We just pinched them off
the roots (?) and are wondering if we should move the part
left underground and put somewhere dark and moist.

Thanks in advance.