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

The USDA zone info for Salem can be used to figure out when you can plant artemesia.

Planting Calendar for Artemesia

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

Artemesia do ok in moderate cold which means that you can get them planted just a bit earlier than other frost tender plants.

The earliest that you can plant artemesia in Salem 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 artemesia and expect a good harvest is probably August. If you wait any later than that and your artemesia may not have a chance to really do well. If you are starting your artemesia indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

In Salem the average date of last frost happens on April 15. In the coldest months of winter you should expect an average low temperature of -10°F.

Since the USDA zone info for Salem is just an average the actual date of last frost is different every year. Half of the time in Salem you get surprised by a frost after April 15 so just be sure to be ready to protect your artemesia in the event of a late frost.

USDA Zone Info for Salem

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 Salem

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