One of the first steps you take when you are figuring out 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 Roseville you can figure out when it's possible to plant oregano by looking at the USDA zone info.

Planting Calendar for Oregano

Frost tolerance for oregano:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Oregano do well in moderate cold which tells us that you can plant them earlier than other frost tender plants.

The earliest that you can plant oregano in Roseville 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 oregano and expect a good harvest is probably October. If you wait any later than that and your oregano may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your oregano indoors.

Last Frost Date

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

Since the USDA zone info for Roseville is an average the actual date of last frost changes from year to year. Since half of the time in Roseville you get surprised by a frost after February 15 be ready to cover your oregano if you have one of those late frosts.

USDA Zone Info for Roseville

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 Roseville

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