One of the best tools that you have as gardeners to help us determine 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.

You can estimate when it's the best time to plant balsam in Creve Coeur by using the USDA zone info.

Planting Calendar for Balsam

Frost tolerance for balsam:	Not tolerant of frost.
When to plant:	After the last frost.

You should not plant balsam until after all chance of frost has passed because they are not cold tolerant.

The earliest that you can plant balsam in Creve Coeur is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant balsam and expect a good harvest is probably August. If you wait any later than that and your balsam may not have a chance to grow to maturity. Starting your balsam indoors is a great way to get them started a couple of weeks 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.

It's important to remember that the actual date of last frost is just an average because it is based on the USDA zone info for Creve Coeur and it will vary from year to year. Half of the time in Creve Coeur it frosts late in the year after April 15 so just be sure to be ready to cover your balsam if you have a surprise late frost.

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.