One of the first steps you take when you are getting a good idea 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.

By referring to the USDA zone info for Zimmerman it's possible to determine when it's the best time to plant asparagus.

Planting Calendar for Asparagus

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

Asparagus are very cold tolerant which tells us that you can start planting them much earlier than more sensitive plants.

The earliest that you can plant asparagus in Zimmerman 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 asparagus and expect a good harvest is probably August. If you wait any later than that and your asparagus may not have a chance to grow to maturity. Starting your asparagus indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

In Zimmerman the average date of last frost happens on May 15. You should expect an average low temperature of -30°F in the coldest months of winter.

Remember that USDA zone info for Zimmerman is an average and the actual date of last frost is different every year. Half of the time in Zimmerman there is a last frost after May 15 so make sure that you are prepared to protect your asparagus if you have a late frost.

USDA Zone Info for Zimmerman

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 Zimmerman

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