One of the first steps you take when you are estimating 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 earliest that you can plant caladium in Winthrop Harbor should be determined by using the USDA zone info.

Planting Calendar for Caladium

Frost tolerance for caladium:	Not tolerant of frost.
When to plant:	After the last frost has passed.

It's a bad idea to plant caladium until after the last frost when the weather gets warmer because they are not cold tolerant.

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

Last Frost Date

In Winthrop Harbor the average date of last frost happens on April 15. It might get as low as -15°F during the coldest months of winter.

Keep in mind that USDA zone info for Winthrop Harbor is just an average and the actual date of last frost is different every year. Since half of the time in Winthrop Harbor you get a frost after April 15 be ready to cover your caladium in the event of 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.