The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You can estimate when it's a good idea to plant brussels sprouts in Knoxville by referring to the USDA zone info.

Planting Calendar for Brussels Sprouts

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

Brussels Sprouts do well in moderate cold which tells us that you can plant them a little bit earlier than other frost tender plants.

The earliest that you can plant brussels sprouts in Knoxville 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 brussels sprouts and expect a good harvest is probably September. If you wait any later than that and your brussels sprouts may not have a chance to fully mature. You can get started a little bit earlier by starting your brussels sprouts indoors.

Last Frost Date

The average date of last frost is April 15 in Knoxville. In the coldest months of winter you can expect an average low temperature of -15°F.

Since the USDA zone info for Knoxville is just an average the actual date of last frost will vary from year to year. Half of the time in Knoxville you get surprised by a frost after April 15 so be sure to be ready to cover your brussels sprouts if you have a surprise late frost.

USDA Zone Info for Knoxville

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 Knoxville

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