One of the first steps you take when you are making a decision about your gardening schedule is find your 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.

By reviewing the USDA zone info for Edwardsville you should be able to determine when it's possible to plant melampodium.

Planting Calendar for Melampodium

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

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

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

Last Frost Date

The average date of last frost is April 15 in Edwardsville. You should expect an average low temperature of -10°F in the coldest months of winter.

Since the USDA zone info for Edwardsville is just an average the actual date of last frost is different every year. Half of the time in Edwardsville it frosts late in the year after April 15 so always be ready to protect your melampodium if you have a late frost.

USDA Zone Info for Edwardsville

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 Edwardsville

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