One of the first steps you take when you are determining 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.

In Marathon you can figure out when to plant oleander by looking at 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 not a good idea to plant oleander until after the last frost because they do not do well in cold weather.

The earliest that you can plant oleander in Marathon is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant oleander and expect a good harvest is probably November. You probably don't want to wait any later than that or else your oleander may not have a chance to grow to maturity. You can get started a little bit earlier by starting your oleander indoors.

Last Frost Date

In Marathon it never frosts. In the coldest months of winter you can expect an average low temperature of 45°F.

It's important to remember that the actual date of last frost is an average because it is based on the USDA zone info for Marathon and it will vary from year to year. Since it never frosts in Marathon you do not have to be ready to protect your oleander in the event of a surprise late frost.

USDA Zone Info for Marathon

Here is the info for USDA Zone 11b.

Average Date of Last Frost (spring)	Never
Average Date of First Frost (fall)	Never
Lowest Expected Low	45°F
Highest Expected Low	50°F

This means that on a really cold year, the coldest it will get is 45°F. On most years you should be prepared to experience lows near 50°F.

Plants to Grow in Marathon

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