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

The first chance to plant chamomile in Decorah should be estimated by referring to the USDA zone info.

Planting Calendar for Chamomile

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

You can plant chamomile a little earlier in the year because they are one of those plants that can tolerate a little bit of cold weather.

The earliest that you can plant chamomile in Decorah 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. You probably don't want to wait any later than that or else your chamomile may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your chamomile indoors.

Last Frost Date

The average date of last frost is May 15 in Decorah. It might get as low as -25°F during the coldest months of winter.

Since the USDA zone info for Decorah is just an average the actual date of last frost is different every year. Half of the time in Decorah last frost occurs after May 15 so be sure to be ready to protect your chamomile if you have a surprise late frost.

USDA Zone Info for Decorah

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Decorah

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