Before planting it is a good idea to find your USDA Zone info to estimate 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 opportunity to plant yarrow in Valley City should be estimated by reviewing the USDA zone info.

Planting Calendar for Yarrow

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

Yarrow are very cold tolerant which means that you can plant them a quite a bit earlier than other plants that might not handle the cold.

The earliest that you can plant yarrow in Valley City 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 yarrow and expect a good harvest is probably August. You probably don't want to wait any later than that or else your yarrow may not have a chance to really do well. If you are starting your yarrow indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on May 15 in Valley City. It might get as low as -30°F during the coldest months of winter.

Since the USDA zone info for Valley City may not be accurate from year to year the actual date of last frost is different every year. Half of the time in Valley City you get a frost after May 15 so just be sure to be ready to protect your yarrow in the event of a surprise late frost.

USDA Zone Info for Valley City

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 Valley City

You may be interested in your other planting guides for Valley City.