The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

One way of figuring out when it's the best time to plant matricaria is to check out the USDA zone info for Great Falls.

Planting Calendar for Matricaria

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

Matricaria are moderately cold tolerant which means that you can get them planted earlier than plants that are more sensitive to the cold.

The earliest that you can plant matricaria in Great Falls 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 matricaria and expect a good harvest is probably August. You probably don't want to wait any later than that or else your matricaria may not have a chance to really do well. If you are starting your matricaria indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

The average date of last frost is May 15 in Great Falls. You can expect an average low temperature of -30°F in the coldest months of winter.

Always keep in mind that the actual date of last frost is not always accurate because it is based on the USDA zone info for Great Falls and it will vary from year to year. Since half of the time in Great Falls you get surprised by a frost after May 15 be ready to cover your matricaria in the event of a late frost.

USDA Zone Info for Great Falls

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 Great Falls

You may be interested in your other planting guides for Great Falls.