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.

A common way of getting a good idea when it's a good idea to plant anagallis is to refer to the USDA zone info for Columbia Falls.

Planting Calendar for Anagallis

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

Since anagallis are barely cold tolerant you can plant them just a tiny bit earlier in the year than other frost tender plants.

The earliest that you can plant anagallis in Columbia 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 anagallis and expect a good harvest is probably August. Any later than that and your anagallis may not have a chance to fully mature. You can get started a little bit earlier by starting your anagallis indoors.

Last Frost Date

The average date of last frost is April 15 in Columbia Falls. It might get as low as -20°F during the coldest months of winter.

Since the USDA zone info for Columbia Falls is an average the actual date of last frost can change quite a bit from year to year. Half of the time in Columbia Falls you get surprised by a frost after April 15 so just be sure to be ready to protect your anagallis in the event of a surprise late frost.

USDA Zone Info for Columbia Falls

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Columbia Falls

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