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.

It's possible to determine when you can plant chamomile by using the USDA zone info for Caribou.

Planting Calendar for Chamomile

Frost tolerance for chamomile:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Chamomile are moderately cold tolerant which means that you can plant them a little bit earlier than other frost tender plants.

The earliest that you can plant chamomile in Caribou is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant chamomile and expect a good harvest is probably August. If you wait any later than that and your chamomile may not have a chance to fully mature. Starting your chamomile indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

On average the last frost has passed is on May 15 in Caribou. In the coldest months of winter you should expect an average low temperature of -30°F.

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 last frost occurs after May 15 so always be ready to protect your chamomile if you have 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.