One of the first steps you take when you are making a decision about your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Herrin you can figure out when it's a good idea to plant feverfew by referring to the USDA zone info.

Planting Calendar for Feverfew

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

Feverfew tend to make it in a little bit of cold which means that you can plant them a little earlier in the year than other frost tender plants.

The earliest that you can plant feverfew in Herrin 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. If you wait any later than that and your feverfew may not have a chance to fully mature. 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 Herrin. You can expect an average low temperature of -5°F in the coldest months of winter.

Since the USDA zone info for Herrin may not be accurate from year to year the actual date of last frost will vary from year to year. Since half of the time in Herrin last frost occurs after April 15 be ready to protect your feverfew in the event of one of those late frosts.

USDA Zone Info for Herrin

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Herrin

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