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.

A way of making a decision about when it's the best time to plant bok choi is to examine the USDA zone info for Oak Creek.

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 are moderately cold tolerant which tells us that you can get them planted earlier than other frost tender plants.

The earliest that you can plant bok choi in Oak Creek 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. Any later than that and your bok choi may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your bok choi indoors.

Last Frost Date

On average the last frost is on April 15 in Oak Creek. You can expect an average low temperature of -15°F in the coldest months of winter.

Remember that the actual date of last frost is just an average because it is based on the USDA zone info for Oak Creek and it changes from year to year. Since half of the time in Oak Creek it frosts late in the year after April 15 be ready to cover your bok choi in the event of one of those late frosts.

USDA Zone Info for Oak Creek

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Oak Creek

You may be interested in your other planting guides for Oak Creek.