One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

It's a good idea to estimate when to plant hemerocallis by looking at the USDA zone info for Creve Coeur.

Planting Calendar for Hemerocallis

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

You can plant hemerocallis a bit earlier in the year because they do well in moderate cold.

The earliest that you can plant hemerocallis 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 hemerocallis and expect a good harvest is probably September. You probably don't want to wait any later than that or else your hemerocallis may not have a chance to grow to maturity. Starting your hemerocallis indoors is a great way to get them started a little bit earlier.

Last Frost Date

In Creve Coeur the average date of last frost happens on April 15. It might get as low as -15°F during the coldest months of winter.

Since the USDA zone info for Creve Coeur may not be accurate from year to year the actual date of last frost changes from year to year. Half of the time in Creve Coeur it frosts late in the year after April 15 so make sure that you are prepared to cover your hemerocallis if you have 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.