A hardiness zone is an area with a minimum and
maximum temperature. Each plant description in
PlantSwatch™ includes the zone(s) where that plant
What is my hardiness zone?
Review the Plan Hardiness Zones guide in
PlantSwatch™ to see which ones correspond to your
local temperatures. Using the color & number coded
bars on each page, look for plants within that range.
Can these zones vary?
Discuss your choices with your local garden center
specialist - some plants are more (or less!) forgiving of
an unseasonal rise or drop in temperature.
My garden has micro
You’ve probably noticed plants that are close to the
warm walls of your home experience an earlier Spring.
Within the space of one garden there are many factors
that could influence the growth of plants. A south
facing white wall where the sun reflects onto a flower
bed may provide enough extra light and warmth to
allow plants to grow that are not normally associated
with that area’s hardiness zone.