The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The first chance to plant melampodium in Winthrop Harbor should be determined by checking out the USDA zone info.

Planting Calendar for Melampodium

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

It's probably a bad idea to plant melampodium until after the last frost because they do not do well in cold weather.

The earliest that you can plant melampodium in Winthrop Harbor 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. If you wait any later than that and your melampodium may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your melampodium indoors.

Last Frost Date

The average date of last frost is April 15 in Winthrop Harbor. In the coldest months of winter you should expect an average low temperature of -15°F.

Remember that USDA zone info for Winthrop Harbor is just an average and the actual date of last frost will vary from year to year. Since half of the time in Winthrop Harbor you get a frost after April 15 be ready to cover your melampodium if you have a late frost.

USDA Zone Info for Winthrop Harbor

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 Winthrop Harbor

You may be interested in your other planting guides for Winthrop Harbor.