One of the first steps you take when you are estimating 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.

The earliest that you can plant black pepper in Flagstaff should be estimated by looking at the USDA zone info.

Planting Calendar for Black pepper

Frost tolerance for black pepper:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

It's a bad idea to plant black pepper until after all chance of frost has passed because they are not cold tolerant.

The earliest that you can plant black pepper in Flagstaff is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant black pepper and expect a good harvest is probably August. Any later than that and your black pepper may not have a chance to grow to maturity. If you are starting your black pepper indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Flagstaff. You can expect an average low temperature of -10°F in the coldest months of winter.

Since the USDA zone info for Flagstaff is just an average the actual date of last frost is different every year. Half of the time in Flagstaff last frost occurs after April 15 so be sure to be ready to protect your black pepper in the event of one of those late frosts.

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.