One of the first steps you take when you are estimating your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Thief River Falls you can estimate when to plant chinese chives by checking out the USDA zone info.

Planting Calendar for Chinese chives

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

Chinese chives do well in moderate cold which means that you can plant them earlier than plants that are more sensitive to the cold.

The earliest that you can plant chinese chives in Thief River Falls 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 chinese chives and expect a good harvest is probably August. Any later than that and your chinese chives may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your chinese chives indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on May 15 in Thief River Falls. In the coldest months of winter you can expect an average low temperature of -35°F.

Always keep in mind that the actual date of last frost is not always accurate because it is based on the USDA zone info for Thief River Falls and it is different every year. Half of the time in Thief River Falls last frost occurs after May 15 so just be sure to be ready to protect your chinese chives in the event of a surprise late frost.

USDA Zone Info for Thief River Falls

Here is the info for USDA Zone 3b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-35°F
Highest Expected Low	-30°F

This means that on a really cold year, the coldest it will get is -35°F. On most years you should be prepared to experience lows near -30°F.

Plants to Grow in Thief River Falls

You may be interested in your other planting guides for Thief River Falls.