One of the first steps you take when you are estimating your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for South Milwaukee can be used to figure out when to plant oleander.

Planting Calendar for Oleander

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

Since oleander require warm weather you must wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant oleander in South Milwaukee 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 grow to maturity. Starting your oleander indoors is a great way to get them started a little bit earlier.

Last Frost Date

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

Since the USDA zone info for South Milwaukee is an average the actual date of last frost changes from year to year. Since half of the time in South Milwaukee you get surprised by a frost after April 15 be ready to protect your oleander in the event of a surprise late frost.

USDA Zone Info for South Milwaukee

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in South Milwaukee

You may be interested in your other planting guides for South Milwaukee.