Pam wrote:

perennials. Others leave selected plants as is over winter, either because they
offer late season attraction (sedum seedheads look great dusted with frost or
snow) or because they offer fodder to local wildlife.

The other reason I wait till spring to do clean-up is because I don't
always remember where exactly I planted something, and especially if it
is late to come up in spring, might decide to plant something else in
that spot.

Suja