My area has had a good bit of trouble keeping asparagus alive from one yr to
another for a variety of reasons .... winters not cold enough ... winter
spurts suddenly too cold so that roots froze, then thawed and rotted ... not
keeping grass out of beds, beds get overgrown and asparagus roots
overwhelmed ... moles, voles, etc. eating roots from underground tunnels ...
too much rain and standing water for too long of a time.

Genevieve in Mississippi