One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

It's possible to figure out when to plant jerusalem artichokes by using the USDA zone info for Roswell.

Planting Calendar for Jerusalem artichokes

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

Jerusalem artichokes do well in moderate cold which tells us that you can start planting them earlier than plants that are more sensitive to the cold.

The earliest that you can plant jerusalem artichokes in Roswell 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 jerusalem artichokes and expect a good harvest is probably September. Any later than that and your jerusalem artichokes may not have a chance to fully mature. If you are starting your jerusalem artichokes 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 April 15 in Roswell. In the coldest months of winter you should expect an average low temperature of 0°F.

It's important to remember that USDA zone info for Roswell may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Half of the time in Roswell last frost occurs after April 15 so be sure to be ready to cover your jerusalem artichokes if you have one of those late frosts.

USDA Zone Info for Roswell

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 Roswell

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