Before planting it is a good idea to find your USDA Zone info to figure out 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.

A common way of determining when it's possible to plant broccoli is to use the USDA zone info for Richland Center.

Planting Calendar for Broccoli

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

You can plant broccoli a little earlier in the year because they are moderately cold tolerant.

The earliest that you can plant broccoli in Richland Center 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 broccoli and expect a good harvest is probably August. You probably don't want to wait any later than that or else your broccoli may not have a chance to grow to maturity. Starting your broccoli indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average all chance of frost has passed is on May 15 in Richland Center. It might get as low as -25°F during the coldest months of winter.

Since the USDA zone info for Richland Center is an average the actual date of last frost changes from year to year. Half of the time in Richland Center there is a last frost after May 15 so make sure that you are ready to cover your broccoli in the event of a surprise late frost.

USDA Zone Info for Richland Center

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Richland Center

You may be interested in your other planting guides for Richland Center.