One of the first steps you take when you are estimating your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Bellevue 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 the last frost when the weather gets warmer.

Since oleander are not cold tolerant it's necessary to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant oleander in Bellevue 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 fully mature. 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 Bellevue. You can expect an average low temperature of -15°F in the coldest months of winter.

Always keep in mind that USDA zone info for Bellevue is not always accurate and the actual date of last frost will vary from year to year. Since half of the time in Bellevue you get a frost after April 15 be ready to cover your oleander in the event of one of those late frosts.

USDA Zone Info for Bellevue

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 Bellevue

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