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.

By reviewing the USDA zone info for Idaho Falls you should be able to figure out when it's possible to plant oleander.

Planting Calendar for Oleander

Frost tolerance for oleander:	Not tolerant of frost.
When to plant:	After the last frost.

It's a bad 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 Idaho Falls 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. If you wait any later than that and your oleander may not have a chance to really do well. You can get started a few weeks earlier by starting your oleander indoors.

Last Frost Date

The average date of last frost is April 15 in Idaho Falls. In the coldest months of winter you should expect an average low temperature of -20°F.

Just be sure to remember that USDA zone info for Idaho Falls is not always accurate and the actual date of last frost can change quite a bit from year to year. Half of the time in Idaho Falls it frosts late in the year after April 15 so just be sure to be ready to cover your oleander in the event of a late frost.

USDA Zone Info for Idaho Falls

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 Idaho Falls

You may be interested in your other planting guides for Idaho Falls.