Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

It's possible to figure out when you can plant new zealand spinach by referring to the USDA zone info for Havre.

Planting Calendar for New Zealand spinach

Frost tolerance for new zealand spinach:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

You can plant new zealand spinach a bit earlier in the year because they are one of those plants that can tolerate a little bit of cold weather.

The earliest that you can plant new zealand spinach in Havre 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 new zealand spinach and expect a good harvest is probably August. You probably don't want to wait any later than that or else your new zealand spinach may not have a chance to grow to maturity. You can get started a little bit earlier by starting your new zealand spinach indoors.

Last Frost Date

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

Since the USDA zone info for Havre is just an average the actual date of last frost is different every year. Half of the time in Havre you get surprised by a frost after May 15 so make sure that you are ready to cover your new zealand spinach in the event of one of those late frosts.

USDA Zone Info for Havre

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 Havre

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