The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Columbia you can determine when to plant chrysanthemums by reviewing the USDA zone info.

Planting Calendar for Chrysanthemums

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

Chrysanthemums are barely cold tolerant which means that you can plant them slightly earlier than more sensitive plants.

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

Last Frost Date

On average the last frost is on April 15 in Columbia. In the coldest months of winter you can expect an average low temperature of -5°F.

Since the USDA zone info for Columbia is an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Columbia you get a frost after April 15 be ready to protect your chrysanthemums in the event of one of those late frosts.

USDA Zone Info for Columbia

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Columbia

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