One of the first steps you take when you are making a decision about 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 way of determining when it's a good idea to plant chinese celery is to check out the USDA zone info for Umatilla.

Planting Calendar for Chinese celery

Frost tolerance for chinese celery:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Chinese celery tend to make it in very little cold which means that you can plant them just a tiny bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant chinese celery in Umatilla 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 chinese celery and expect a good harvest is probably August. If you wait any later than that and your chinese celery may not have a chance to really do well. You can get started a few weeks earlier by starting your chinese celery indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Umatilla. In the coldest months of winter you should expect an average low temperature of 5°F.

Always keep in mind that USDA zone info for Umatilla is not always accurate and the actual date of last frost can change quite a bit from year to year. Half of the time in Umatilla it frosts late in the year after April 15 so just be sure to be ready to cover your chinese celery in the event of one of those late frosts.

USDA Zone Info for Umatilla

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	5°F
Highest Expected Low	10°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 10°F.

Plants to Grow in Umatilla

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