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.

A way of getting a good idea when to plant redvein dock is to check out the USDA zone info for Bismarck.

Planting Calendar for Redvein Dock

Frost tolerance for redvein dock:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

You can plant redvein dock slightly earlier in the year because they do ok in moderate cold.

The earliest that you can plant redvein dock in Bismarck is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant redvein dock and expect a good harvest is probably August. If you wait any later than that and your redvein dock may not have a chance to really do well. Starting your redvein dock indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is May 15 in Bismarck. In the coldest months of winter you can expect an average low temperature of -30°F.

Since the USDA zone info for Bismarck may not be accurate from year to year the actual date of last frost is different every year. Since half of the time in Bismarck you get surprised by a frost after May 15 be ready to cover your redvein dock if you have a surprise late frost.

USDA Zone Info for Bismarck

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 Bismarck

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