One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You should be able to determine when it's possible to plant chrysanthemums by using the USDA zone info for Cheyenne.

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 do well in mild cold which tells us that you can plant them just a tiny bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant chrysanthemums in Cheyenne 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 has passed is on April 15 in Cheyenne. In the coldest months of winter you should expect an average low temperature of -15°F.

Since the USDA zone info for Cheyenne may not be accurate from year to year the actual date of last frost will vary from year to year. Half of the time in Cheyenne last frost occurs after April 15 so be sure to be ready to cover your chrysanthemums if you have one of those late frosts.

USDA Zone Info for Cheyenne

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Cheyenne

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