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

One way of making a decision about when it's possible to plant feverfew is to examine the USDA zone info for Bourbonnais.

Planting Calendar for Feverfew

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

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

The earliest that you can plant feverfew in Bourbonnais 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 feverfew and expect a good harvest is probably September. Any later than that and your feverfew may not have a chance to really do well. You can get started a couple of weeks earlier by starting your feverfew indoors.

Last Frost Date

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

Since the USDA zone info for Bourbonnais may not be accurate from year to year the actual date of last frost is different every year. Half of the time in Bourbonnais you get surprised by a frost after April 15 so make sure that you are ready to protect your feverfew if you have a late frost.

USDA Zone Info for Bourbonnais

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 Bourbonnais

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