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

The first chance to plant jerusalem artichokes in Ashland should be estimated by reviewing the USDA zone info.

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 ok in moderate cold which tells us that you can plant them a little earlier in the year than other plants that might not handle the cold.

The earliest that you can plant jerusalem artichokes in Ashland 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 jerusalem artichokes and expect a good harvest is probably August. Any later than that and your jerusalem artichokes may not have a chance to fully mature. Starting your jerusalem artichokes indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is May 15 in Ashland. It might get as low as -25°F during the coldest months of winter.

It's important to remember that USDA zone info for Ashland is just an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Ashland last frost occurs after May 15 so just be sure to be ready to cover your jerusalem artichokes if you have a late frost.

USDA Zone Info for Ashland

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Ashland

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