One of the first steps you take when you are figuring out your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Petersburg you can estimate when it's possible to plant chinese celery by looking at the USDA zone info.

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.

You can plant chinese celery just a tiny bit earlier in the year because they do ok in moderate cold.

The earliest that you can plant chinese celery in Petersburg 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. 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 when the weather gets warmer is on April 15 in Petersburg. It might get as low as 5°F during the coldest months of winter.

Always keep in mind that USDA zone info for Petersburg is an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Petersburg it frosts late in the year after April 15 so just be sure to be ready to protect your chinese celery if you have a late frost.

USDA Zone Info for Petersburg

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 Petersburg

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