One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Excelsior Springs you can estimate when it's possible to plant calendula by using the USDA zone info.

Planting Calendar for Calendula

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

Calendula do well in moderate cold which means that you can get them planted earlier than more sensitive plants.

The earliest that you can plant calendula in Excelsior 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 calendula and expect a good harvest is probably September. Any later than that and your calendula may not have a chance to grow to maturity. Starting your calendula indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Excelsior Springs. It might get as low as -10°F during the coldest months of winter.

It's important to remember that USDA zone info for Excelsior Springs is an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in Excelsior Springs you get a frost after April 15 be ready to protect your calendula if you have one of those late frosts.

USDA Zone Info for Excelsior Springs

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Excelsior Springs

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