The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By checking out the USDA zone info for Prosser it's possible to figure out when it's the best time to plant chinese chives.

Planting Calendar for Chinese chives

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

You can plant chinese chives a little earlier in the year because they are moderately cold tolerant.

The earliest that you can plant chinese chives in Prosser 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 chinese chives and expect a good harvest is probably September. If you wait any later than that and your chinese chives may not have a chance to fully mature. You can get started a little bit earlier by starting your chinese chives indoors.

Last Frost Date

On average the last frost is on April 15 in Prosser. You should expect an average low temperature of 0°F in the coldest months of winter.

Just be sure to remember that the actual date of last frost is just an average because it is based on the USDA zone info for Prosser and it changes from year to year. Half of the time in Prosser it frosts late in the year after April 15 so make sure that you are ready to protect your chinese chives in the event of a late frost.

USDA Zone Info for Prosser

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 Prosser

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