One of the first steps you take when you are determining 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.

A common way of getting a good idea when it's a good idea to plant iresene is to look at the USDA zone info for Wapato.

Planting Calendar for Iresene

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

Iresene do not do well in cold weather which means that you must wait until it warms up after the last frost before you can plant them.

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

The last month that you can plant iresene and expect a good harvest is probably August. Any later than that and your iresene may not have a chance to fully mature. Starting your iresene indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost is on April 15 in Wapato. You can expect an average low temperature of -5°F in the coldest months of winter.

Remember that USDA zone info for Wapato is not always accurate and the actual date of last frost changes from year to year. Since half of the time in Wapato last frost occurs after April 15 be ready to cover your iresene in the event of a late frost.

USDA Zone Info for Wapato

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Wapato

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