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

The USDA zone info for Stewartville can be reffered to in order to figure out when you can plant artichokes.

Planting Calendar for Artichokes

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

You can plant artichokes just a bit earlier in the year because they are moderately cold tolerant.

The earliest that you can plant artichokes in Stewartville 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 artichokes and expect a good harvest is probably August. You probably don't want to wait any later than that or else your artichokes may not have a chance to grow to maturity. Starting your artichokes indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost has passed is on May 15 in Stewartville. In the coldest months of winter you can expect an average low temperature of -25°F.

Keep in mind that USDA zone info for Stewartville may not be accurate from year to year and the actual date of last frost will vary from year to year. Half of the time in Stewartville you get a frost after May 15 so always be ready to cover your artichokes in the event of a surprise late frost.

USDA Zone Info for Stewartville

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 Stewartville

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