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.

It's possible to estimate when it's possible to plant bishop's weed by looking at the USDA zone info for Creve Coeur.

Planting Calendar for Bishop's Weed

Frost tolerance for bishop's weed:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

You can plant bishop's weed much earlier in the year because they are very cold tolerant.

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

Last Frost Date

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

Since the USDA zone info for Creve Coeur is an average the actual date of last frost will vary from year to year. Half of the time in Creve Coeur there is a last frost after April 15 so always be ready to protect your bishop's weed in the event of one of those late frosts.

USDA Zone Info for Creve Coeur

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 Creve Coeur

You may be interested in your other planting guides for Creve Coeur.