One of the first steps you take when you are figuring out your gardening schedule is find your 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.

In Ballwin you can estimate when it's a good idea to plant cauliflower by referring to the USDA zone info.

Planting Calendar for Cauliflower

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

Cauliflower tend to make it in mild cold which tells us 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 cauliflower in Ballwin 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 cauliflower and expect a good harvest is probably September. You probably don't want to wait any later than that or else your cauliflower may not have a chance to grow to maturity. Starting your cauliflower indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Ballwin. It might get as low as -10°F during the coldest months of winter.

Since the USDA zone info for Ballwin is not always accurate the actual date of last frost will vary from year to year. Since half of the time in Ballwin it frosts late in the year after April 15 be ready to protect your cauliflower if you have one of those late frosts.

USDA Zone Info for Ballwin

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Ballwin

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