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

The USDA zone info for Caribou can be used to determine when you can plant axilflower.

Planting Calendar for Axilflower

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

You really shouldn't plant axilflower until after the last frost because they require warm weather.

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

Last Frost Date

The average date of last frost is May 15 in Caribou. It might get as low as -30°F during the coldest months of winter.

Remember that USDA zone info for Caribou is just an average and the actual date of last frost is different every year. Since half of the time in Caribou you get a frost after May 15 be ready to cover your axilflower if you have one of those late frosts.

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.