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.

You will be able to determine when it's a good idea to plant iresene by using the USDA zone info for Eureka.

Planting Calendar for Iresene

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

You should not plant iresene until after the last frost because they do not do well in cold weather.

The earliest that you can plant iresene in Eureka 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 grow to maturity. You can get started a little bit earlier by starting your iresene indoors.

Last Frost Date

On average all chance of frost has passed is on February 15 in Eureka. In the coldest months of winter you should expect an average low temperature of 25°F.

It's important to remember that USDA zone info for Eureka may not be accurate from year to year and the actual date of last frost is different every year. Since half of the time in Eureka it frosts late in the year after February 15 be ready to cover your iresene if you have a surprise late frost.

USDA Zone Info for Eureka

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 Eureka

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