The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Crookston you can determine when it's a good idea to plant chinese celery by using 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.

Chinese celery do ok in moderate cold which tells us that you can get them planted just a bit earlier than more sensitive plants.

The earliest that you can plant chinese celery in Crookston 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. If you wait any later than that and your chinese celery may not have a chance to grow to maturity. Starting your chinese celery indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is May 15 in Crookston. It might get as low as -30°F during the coldest months of winter.

It's important to remember that USDA zone info for Crookston is just an average and the actual date of last frost will vary from year to year. Since half of the time in Crookston you get surprised by a frost after May 15 be ready to protect your chinese celery in the event of one of those late frosts.

USDA Zone Info for Crookston

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-30°F
Highest Expected Low	-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Crookston

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