The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

It's possible to determine when to plant oleander by reviewing the USDA zone info for Watseka.

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 really should wait until after the last frost before you can plant them.

The earliest that you can plant oleander in Watseka 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. Any later than that and your oleander may not have a chance to really do well. If you are starting your oleander indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Watseka. In the coldest months of winter you can expect an average low temperature of -15°F.

Since the USDA zone info for Watseka is just an average the actual date of last frost changes from year to year. Since half of the time in Watseka there is a last frost after April 15 be ready to cover your oleander in the event of a surprise late frost.

USDA Zone Info for Watseka

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 Watseka

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