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.

In Bradford you can figure out when to plant bok choi by looking at the USDA zone info.

Planting Calendar for Bok Choi

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

Since bok choi are moderately cold tolerant you can plant them a little earlier in the year than more sensitive plants.

The earliest that you can plant bok choi in Bradford 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 bok choi and expect a good harvest is probably September. If you wait any later than that and your bok choi may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your bok choi indoors.

Last Frost Date

The average date of last frost is April 15 in Bradford. It might get as low as -20°F during the coldest months of winter.

Keep in mind that the actual date of last frost is an average because it is based on the USDA zone info for Bradford and it is different every year. Since half of the time in Bradford you get surprised by a frost after April 15 be ready to protect your bok choi if you have one of those late frosts.

USDA Zone Info for Bradford

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Bradford

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