Before planting it is a good idea to find your USDA Zone info to figure out 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.

You should be able to estimate when it's a good idea to plant lotus vine by checking out the USDA zone info for Caribou.

Planting Calendar for Lotus Vine

Frost tolerance for lotus vine:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Lotus Vine are one of those plants that can tolerate a tiny bit of cold weather which tells us that you can get them planted just a bit earlier than other frost tender plants.

The earliest that you can plant lotus vine in Caribou 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 lotus vine and expect a good harvest is probably August. You probably don't want to wait any later than that or else your lotus vine may not have a chance to fully mature. If you are starting your lotus vine indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

In Caribou the average date of last frost happens on May 15. In the coldest months of winter you can expect an average low temperature of -30°F.

Just be sure to remember that USDA zone info for Caribou is an average and the actual date of last frost will vary from year to year. Half of the time in Caribou there is a last frost after May 15 so be sure to be ready to cover your lotus vine in the event of a surprise 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.