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

The USDA zone info for Rock Springs can be reviewed to determine when you can plant feverfew.

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 just a bit earlier in the year because they are one of those plants that can tolerate a little bit of cold weather.

The earliest that you can plant feverfew in Rock Springs 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 grow to maturity. Starting your feverfew indoors is a great way to get them started a little bit earlier.

Last Frost Date

In Rock Springs the average date of last frost happens on April 15. You can expect an average low temperature of -20°F in the coldest months of winter.

Always keep in mind that USDA zone info for Rock Springs 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 Rock Springs you get a frost after April 15 be ready to protect your feverfew in the event of a late frost.

USDA Zone Info for Rock Springs

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Rock Springs

You may be interested in your other planting guides for Rock Springs.