Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. 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 Grass Valley it's a good idea to figure out when it's the best time to plant oleander.

Planting Calendar for Oleander

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

Since oleander are not cold tolerant it is necessary to wait until after the last frost has passed before you can plant them.

The earliest that you can plant oleander in Grass Valley 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. Any later than that and your oleander may not have a chance to fully mature. 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 Grass Valley. It might get as low as 20°F during the coldest months of winter.

Keep in mind that USDA zone info for Grass Valley 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 Grass Valley it frosts late in the year after February 15 so just be sure to be ready to cover your oleander in the event of one of those late frosts.

USDA Zone Info for Grass Valley

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°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 25°F.

Plants to Grow in Grass Valley

You may be interested in your other planting guides for Grass Valley.