header
We have categorized our Plants according to which Hardiness Zones they fall into. A plant is hardy if it can survive the lowest winter temperature in your area. A plant which grows from seed and then goes to seed in the same growing season is an annual and does not have a hardiness zone. Hardiness does not apply in this case because the plant does not live long enough to see winter. If you do not know your hardiness zone use this zip code tool below to see what zone your zip code is listed as.



Now click on your zone below to see the perennials that are hardy in your area.


Here is a table for choosing the best zone for you.
Temperature scale of hardiness zones, showing the average annual minimum temperature in degrees Celsius. The main factors determining average minimum temperature are altitude, latitude and proximity to the coast.

hardiness zone scale
Each winter has a coldest day and keep track of each years record low. If you take the past ten years of lowest temperatures in your garden and add them together then divide by ten you have your average annual minimum temperature. Look this number up on the chart above to see which zone you are in. If you have accurate data this is the best way to set your hardiness zone. The question you have to try to answer is "What is the coldest temperature that my garden will experience this winter?" If you have a good answer to that then take your temperature to the chart to find your Hardiness Zone.
Online Payment Service
We now accept Credit Cards on our Secure site!