One of the best tools that you have as gardeners to help us estimate your gardening schedule is the 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.

You should be able to figure out when you can plant bok choi by reviewing the USDA zone info for Little Falls.

Planting Calendar for Bok Choi

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

Bok Choi can survive in mild cold which means that you can plant them a little bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant bok choi in Little Falls 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 bok choi and expect a good harvest is probably August. You probably don't want to wait any later than that or else your bok choi may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your bok choi indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on May 15 in Little Falls. You should expect an average low temperature of -30°F in the coldest months of winter.

Since the USDA zone info for Little Falls is just an average the actual date of last frost can change quite a bit from year to year. Half of the time in Little Falls there is a last frost after May 15 so make sure that you are prepared to protect your bok choi if you have a late frost.

USDA Zone Info for Little Falls

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 Little Falls

You may be interested in your other planting guides for Little Falls.