One of the first steps you take when you are getting a good idea your gardening schedule is find your USDA Zone info. 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 Ellisville can be used to figure out when to plant marigold.

Planting Calendar for Marigold

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

Marigold are not cold tolerant which means that you need to wait until it warms up after all chance of frost has passed before you can plant them.

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

Last Frost Date

On average all chance of frost has passed is on March 15 in Ellisville. In the coldest months of winter you can expect an average low temperature of 10°F.

Since the USDA zone info for Ellisville is just an average the actual date of last frost changes from year to year. Since half of the time in Ellisville you get a frost after March 15 be ready to protect your marigold if you have one of those late frosts.

USDA Zone Info for Ellisville

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°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 15°F.

Plants to Grow in Ellisville

You may be interested in your other planting guides for Ellisville.