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.

In Jamestown you can determine when it's a good idea to plant arabis by referring to the USDA zone info.

Planting Calendar for Arabis

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

Since arabis are very cold tolerant you can plant them earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant arabis in Jamestown 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 arabis and expect a good harvest is probably August. Any later than that and your arabis may not have a chance to really do well. If you are starting your arabis indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

The average date of last frost is May 15 in Jamestown. It might get as low as -30°F during the coldest months of winter.

Since the USDA zone info for Jamestown may not be accurate from year to year the actual date of last frost changes from year to year. Half of the time in Jamestown there is a last frost after May 15 so make sure that you are prepared to protect your arabis in the event of a surprise late frost.

USDA Zone Info for Jamestown

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-30°F
Highest Expected Low	-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Jamestown

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