When can I plant Sutera in Zone 4a

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

A way of making a decision about when it's a good idea to plant sutera is to look at the USDA zone info for Zone 4a.


Planting Calendar for Sutera

Frost tolerance for sutera: Tolerant of a very small amount of frost.
When you should plant them: Up to 3 weeks before last frost.

Since sutera are barely cold tolerant you can plant them a bit earlier in the year than plants that are more sensitive to the cold.

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

The earliest that you can plant sutera in Zone 4a 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 sutera and expect a good harvest is probably August. If you wait any later than that and your sutera may not have a chance to fully mature. Starting your sutera indoors is a great way to get them started a little bit earlier.

Last Frost Date

In Zone 4a the average date of last frost happens on May 15. In the coldest months of winter we can expect an average low temperature of -30°F.

Always keep in mind that our actual date of last frost is not always accurate because it is based on the USDA zone info for Zone 4a and it will vary from year to year. Since half of the time in Zone 4a we get surprised by a frost after May 15 be ready to cover your sutera in the event of a late frost.

USDA Zone Info for Zone 4a

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 Zone 4a

You may be interested in our other planting guides for Zone 4a.