When to Plant Sutera in Zone 3b

The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The first chance to plant sutera in Zone 3b can be estimated by reviewing the USDA zone info.

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Planting Calendar for Sutera

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

Sutera do well in very little cold which means that you can plant them just a tiny bit earlier in the year than more sensitive plants.

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 3b 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. You probably don't want to wait any later than that or else your sutera may not have a chance to grow to maturity. If you are starting your sutera indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

The average date of last frost is May 15 in Zone 3b. In the coldest months of winter you should expect an average low temperature of -35°F.

Since the USDA zone info for Zone 3b is not always accurate the actual date of last frost can change quite a bit from year to year. Half of the time in Zone 3b you get surprised by a frost after May 15 so be sure to be ready to protect your sutera if you have a late frost.

USDA Zone Info for Zone 3b

Here is the info for USDA Zone 3b.

Average Date of Last Frost (spring)May 15
Average Date of First Frost (fall)September 15
Lowest Expected Low-35°F
Highest Expected Low-30°F

This means that on a really cold year, the coldest it will get is -35°F. On most years you should be prepared to experience lows near -30°F.

Plants to Grow in Zone 3b

You may be interested in your other planting guides for Zone 3b.