Warning: Cold Weather Tonight

Here are some things to consider:
Cover the most tender plants like roses, peonies and xxx with a sheet or newspaper.If you have already planted spring annuals (petunias, begonias etc) or vegetable plants, cover them as well.
Cover the plants around dinner time tonight and uncover them around 9am tomorrow morning.
Most plants will come through the cold temperatures just fine. Some of the more tender growth may get burned but will most likely be re-generated.
As a rule, the last frost date in this area is usually around May 10th. This is the date that it is safe to plant summer annuals and vegetables.