Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The first opportunity to plant oleander in Sun Prairie can be estimated by using the USDA zone info.

Planting Calendar for Oleander

Frost tolerance for oleander:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

It's not a good idea to plant oleander until after all chance of frost has passed because they require warm weather.

The earliest that you can plant oleander in Sun Prairie is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant oleander and expect a good harvest is probably August. You probably don't want to wait any later than that or else your oleander may not have a chance to fully mature. If you are starting your oleander indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

In Sun Prairie the average date of last frost happens on April 15. You can expect an average low temperature of -20°F in the coldest months of winter.

Since the USDA zone info for Sun Prairie may not be accurate from year to year the actual date of last frost will vary from year to year. Since half of the time in Sun Prairie it frosts late in the year after April 15 be ready to cover your oleander if you have a surprise late frost.

USDA Zone Info for Sun Prairie

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 Sun Prairie

You may be interested in your other planting guides for Sun Prairie.