The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

It's a good idea to determine when it's a good idea to plant caladium by reviewing the USDA zone info for Caribou.

Planting Calendar for Caladium

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

You can not plant caladium until after the last frost because they do not do well in cold weather.

The earliest that you can plant caladium in Caribou is May. However, you really should wait until June 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. Any later than that and your caladium may not have a chance to really do well. You can get started a few weeks earlier by starting your caladium indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on May 15 in Caribou. You should expect an average low temperature of -30°F in the coldest months of winter.

Since the USDA zone info for Caribou is not always accurate the actual date of last frost can change quite a bit from year to year. Since half of the time in Caribou it frosts late in the year after May 15 be ready to protect your caladium in the event of a late frost.

USDA Zone Info for Caribou

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-30°F
Highest Expected Low	-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Caribou

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