Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

It's a good idea to determine when it's possible to plant black pepper by looking at the USDA zone info for Walla Walla.

Planting Calendar for Black pepper

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

It's not a good idea to plant black pepper until after all chance of frost has passed because they require warm weather.

The earliest that you can plant black pepper in Walla Walla 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. You probably don't want to wait any later than that or else your black pepper may not have a chance to grow to maturity. Starting your black pepper indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

In Walla Walla the average date of last frost happens on April 15. In the coldest months of winter you can expect an average low temperature of 0°F.

Since the USDA zone info for Walla Walla is not always accurate the actual date of last frost is different every year. Since half of the time in Walla Walla it frosts late in the year after April 15 be ready to cover your black pepper if you have a surprise late frost.

USDA Zone Info for Walla Walla

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Walla Walla

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