The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You can determine when it's possible to plant sutera in Tualatin by using the USDA zone info.

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.

You can plant sutera slightly earlier in the year because they are barely cold tolerant.

The earliest that you can plant sutera in Tualatin 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 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 really do well. You can get started a couple of weeks earlier by starting your sutera indoors.

Last Frost Date

On average the last frost has passed is on March 15 in Tualatin. You should expect an average low temperature of 15°F in the coldest months of winter.

Since the USDA zone info for Tualatin is not always accurate the actual date of last frost changes from year to year. Half of the time in Tualatin it frosts late in the year after March 15 so make sure that you are prepared to protect your sutera if you have one of those late frosts.

USDA Zone Info for Tualatin

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°F

This means that on a really cold year, the coldest it will get is 15°F. On most years you should be prepared to experience lows near 20°F.

Plants to Grow in Tualatin

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