One of the best tools that you have as gardeners to help us estimate 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.

By checking out the USDA zone info for Colorado City you will be able to figure out when you can plant petunias.

Planting Calendar for Petunias

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

Petunias do ok in some cold which means that you can plant them a bit earlier in the year than more sensitive plants.

The earliest that you can plant petunias in Colorado City 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 petunias and expect a good harvest is probably August. Any later than that and your petunias may not have a chance to really do well. You can get started a couple of weeks earlier by starting your petunias indoors.

Last Frost Date

The average date of last frost is April 15 in Colorado City. You can expect an average low temperature of 5°F in the coldest months of winter.

Since the USDA zone info for Colorado City is an average the actual date of last frost is different every year. Half of the time in Colorado City you get a frost after April 15 so always be ready to cover your petunias in the event of one of those late frosts.

USDA Zone Info for Colorado City

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	5°F
Highest Expected Low	10°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 10°F.

Plants to Grow in Colorado City

You may be interested in your other planting guides for Colorado City.