Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

One way of getting a good idea when it's possible to plant garden orache is to use the USDA zone info for Kennewick.

Planting Calendar for Garden Orache

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

Since garden orache are moderately cold tolerant you can plant them a bit earlier in the year than other frost tender plants.

The earliest that you can plant garden orache in Kennewick is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant garden orache and expect a good harvest is probably September. Any later than that and your garden orache may not have a chance to really do well. If you are starting your garden orache indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

In Kennewick the average date of last frost happens on April 15. You can expect an average low temperature of 0°F in the coldest months of winter.

Keep in mind that USDA zone info for Kennewick is an average and the actual date of last frost changes from year to year. Since half of the time in Kennewick you get a frost after April 15 be ready to cover your garden orache in the event of a surprise late frost.

USDA Zone Info for Kennewick

Here is the info for USDA Zone 7a.

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

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

Plants to Grow in Kennewick

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