One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

One way of determining when to plant garlic is to check out the USDA zone info for Commerce City.

Planting Calendar for Garlic

Frost tolerance for garlic:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Since garlic do well in cold you can plant them a lot earlier in the year than other frost tender plants.

The earliest that you can plant garlic in Commerce City is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant garlic and expect a good harvest is probably September. Any later than that and your garlic may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your garlic indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Commerce City. In the coldest months of winter you can expect an average low temperature of -15°F.

Since the USDA zone info for Commerce City may not be accurate from year to year the actual date of last frost changes from year to year. Since half of the time in Commerce City it frosts late in the year after April 15 be ready to cover your garlic if you have one of those late frosts.

USDA Zone Info for Commerce City

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 Commerce City

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