One of the best tools that you have as gardeners to help us figure out your gardening schedule is the 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.

You can estimate when it's possible to plant elephant ears in Caribou by referring to the USDA zone info.

Planting Calendar for Elephant Ears

Frost tolerance for elephant ears:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

Elephant Ears require warm weather which tells us that it is necessary to wait until it warms up after the last frost when the weather gets warmer before you can plant them.

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

Last Frost Date

In Caribou the average date of last frost happens on May 15. It might get as low as -30°F during the coldest months of winter.

Keep in mind that USDA zone info for Caribou may not be accurate from year to year and the actual date of last frost is different every year. Half of the time in Caribou last frost occurs after May 15 so be sure to be ready to cover your elephant ears if you have 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.