Before planting it is a good idea to find your USDA Zone info to determine your garden 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 opportunity to plant melampodium in Janesville should be figured out by using the USDA zone info.

Planting Calendar for Melampodium

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

Since melampodium do not do well in cold weather it's necessary to wait until after the last frost has passed before you can plant them.

The earliest that you can plant melampodium in Janesville 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

On average all chance of frost has passed is on April 15 in Janesville. You should expect an average low temperature of -20°F in the coldest months of winter.

It's important to remember that USDA zone info for Janesville is just an average and the actual date of last frost changes from year to year. Since half of the time in Janesville it frosts late in the year after April 15 be ready to protect your melampodium if you have a surprise late frost.

USDA Zone Info for Janesville

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Janesville

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