One of the first steps you take when you are getting a good idea your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By checking out the USDA zone info for Flagstaff you should be able to figure out when it's the best time to plant carrots.

Planting Calendar for Carrots

Frost tolerance for carrots:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Since carrots do well in moderate cold you can plant them a little bit earlier in the year than other frost tender plants.

The earliest that you can plant carrots in Flagstaff 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 carrots and expect a good harvest is probably September. You probably don't want to wait any later than that or else your carrots may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your carrots indoors.

Last Frost Date

On average the last frost is on April 15 in Flagstaff. In the coldest months of winter you should expect an average low temperature of -10°F.

Always keep in mind that USDA zone info for Flagstaff may not be accurate from year to year and the actual date of last frost will vary from year to year. Since half of the time in Flagstaff last frost occurs after April 15 be ready to protect your carrots if you have a surprise late frost.

USDA Zone Info for Flagstaff

Here is the info for USDA Zone 6a.

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

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Flagstaff

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