When to Plant Mustard in Sidney, MT

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

You can determine when it's possible to plant mustard in Sidney by looking at the USDA zone info.


Planting Calendar for Mustard

Frost tolerance for mustard: Not tolerant of frost.
When to plant: After the last frost when the weather gets warmer.

You can not plant mustard until after all chance of frost has passed because they are not cold tolerant.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant mustard
Possibly ok, but a risky time to plant mustard
Probably not a good time to plant mustard

The earliest that you can plant mustard in Sidney is May. However, you really should wait until June if you don't want to take any chances.

The last month that you can plant mustard and expect a good harvest is probably August. If you wait any later than that and your mustard may not have a chance to really do well. You can get started a few weeks earlier by starting your mustard indoors.

Last Frost Date

The average date of last frost is May 15 in Sidney. It might get as low as -30°F during the coldest months of winter.

Since the USDA zone info for Sidney is just an average the actual date of last frost will vary from year to year. Half of the time in Sidney there is a last frost after May 15 so make sure that you are ready to protect your mustard in the event of one of those late frosts.

USDA Zone Info for Sidney

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 Sidney

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