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.

A way of making a decision about when it's possible to plant oleander is to refer to the USDA zone info for Vacaville.

Planting Calendar for Oleander

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

It's probably a bad idea to plant oleander until after the last frost because they require warm weather.

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

The last month that you can plant oleander and expect a good harvest is probably September. If you wait any later than that and your oleander may not have a chance to really do well. Starting your oleander indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is February 15 in Vacaville. In the coldest months of winter you should expect an average low temperature of 25°F.

Since the USDA zone info for Vacaville is an average the actual date of last frost changes from year to year. Half of the time in Vacaville last frost occurs after February 15 so always be ready to cover your oleander if you have a surprise late frost.

USDA Zone Info for Vacaville

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Vacaville

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