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

In Marion you can figure out when it's the best time to plant oleander by referring to 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 probably a bad idea to plant oleander until after the last frost when the weather gets warmer because they require warm weather.

The earliest that you can plant oleander in Marion 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 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

In Marion the average date of last frost happens on April 15. In the coldest months of winter you should expect an average low temperature of -20°F.

Always keep in mind that USDA zone info for Marion is just an average and the actual date of last frost changes from year to year. Since half of the time in Marion you get surprised by a frost after April 15 be ready to cover your oleander in the event of a late frost.

USDA Zone Info for Marion

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 Marion

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