When autumn nights start to get cold, it’s time to prepare
your garden for winter. Winterizing not only makes your
garden look better during the cold weather months, but also
will make for easier work in the spring.

Start with Annuals

Start your clean up by removing weeds and spent annuals
from your beds. Remove non-hardy bulbs such as cannas,
dahlias, and gladiolus from the beds. Allow the bulbs to dry
in the sun for a few hours. This will prevent them from
moulding in storage. Store in a paper bag or box with peat
moss in a cool dry spot for the winter (i.e. Attic, basement).

Winterizing Shrubs and Trees

Removed diseased leaves (if any) from around your shrubs
and trees. Remove any dead branches. Pruning is not
recommended in the fall as it may stimulate new growth just
as the harsh winter is bearing down. Water the shrubs
thoroughly (if mother nature doesn’t provide enough rain in
the fall), before the ground freezes. This will provide enough
moisture for the plants until spring. Winter can be dry and
harsh on many trees and shrubs, such as evergreens, so it’s
best to supply them with a large supply of moisture.

Winterizing Perennials

Perennials look tired and messy during the cold weather
months so you may want to cut them back in the fall to keep
your garden looking tidy and to avoid extra work in the
spring. Excellent perennials to cut back include: Aliceville,
Campanula, Coreopsis, Delphinium, Geranium, Hosta, and
Veronica. These perennials should be cut back to about 6-8
inches above the ground. Do not cut back evergreen and
alpine perennials (such as Artemisia, Dianthus,
Helianthemum and Heuchera)

This information is also available in a PDF.