Before planting it is a good idea to find your USDA Zone info to estimate 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.

A common way of figuring out when you can plant chinese celery is to consult the USDA zone info for Altoona.

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 are barely cold tolerant.

The earliest that you can plant chinese celery in Altoona 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 chinese celery and expect a good harvest is probably August. You probably don't want to wait any later than that or else your chinese celery may not have a chance to grow to maturity. If you are starting your chinese celery indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

The average date of last frost is May 15 in Altoona. It might get as low as -25°F during the coldest months of winter.

Always keep in mind that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Altoona and it changes from year to year. Half of the time in Altoona last frost occurs after May 15 so just be sure to be ready to cover your chinese celery in the event of a late frost.

USDA Zone Info for Altoona

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Altoona

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