One of the first steps you take when you are figuring out 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.

You can estimate when you can plant iresene in Sebastopol by reviewing the USDA zone info.

Planting Calendar for Iresene

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

Since iresene do not do well in cold weather it's necessary to wait until after the last frost before you can plant them.

The earliest that you can plant iresene in Sebastopol 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 iresene and expect a good harvest is probably September. Any later than that and your iresene may not have a chance to fully mature. You can get started a few weeks earlier by starting your iresene indoors.

Last Frost Date

The average date of last frost is February 15 in Sebastopol. You should expect an average low temperature of 20°F in the coldest months of winter.

Always keep in mind that USDA zone info for Sebastopol is not always accurate and the actual date of last frost changes from year to year. Since half of the time in Sebastopol there is a last frost after February 15 be ready to protect your iresene in the event of a surprise late frost.

USDA Zone Info for Sebastopol

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 Sebastopol

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