One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for Evansville should be looked at to estimate when to plant erysimum.

Planting Calendar for Erysimum

Frost tolerance for erysimum:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Erysimum do well in moderate cold which means that you can get them planted earlier than other frost tender plants.

The earliest that you can plant erysimum in Evansville is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant erysimum and expect a good harvest is probably September. You probably don't want to wait any later than that or else your erysimum may not have a chance to really do well. You can get started a little bit earlier by starting your erysimum indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Evansville. It might get as low as -20°F during the coldest months of winter.

It's important to remember that USDA zone info for Evansville is an average and the actual date of last frost changes from year to year. Half of the time in Evansville you get surprised by a frost after April 15 so just be sure to be ready to cover your erysimum if you have a surprise late frost.

USDA Zone Info for Evansville

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Evansville

You may be interested in your other planting guides for Evansville.