Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You can determine when it's a good idea to plant broccoli in Gurnee by looking at the USDA zone info.

Planting Calendar for Broccoli

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

Since broccoli are moderately cold tolerant you can plant them a little bit earlier in the year than other frost tender plants.

The earliest that you can plant broccoli in Gurnee 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 broccoli and expect a good harvest is probably September. You probably don't want to wait any later than that or else your broccoli may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your broccoli indoors.

Last Frost Date

On average the last frost is on April 15 in Gurnee. It might get as low as -15°F during the coldest months of winter.

Always keep in mind that USDA zone info for Gurnee may not be accurate from year to year and the actual date of last frost will vary from year to year. Since half of the time in Gurnee you get a frost after April 15 be ready to protect your broccoli if you have a late frost.

USDA Zone Info for Gurnee

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 Gurnee

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