One of the first steps you take when you are estimating your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for Portland should be reviewed to estimate when you can plant winter savory.

Planting Calendar for Winter Savory

Frost tolerance for winter savory:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Winter Savory can survive in some cold which tells us that you can plant them a little earlier in the year than other frost tender plants.

The earliest that you can plant winter savory in Portland is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant winter savory and expect a good harvest is probably September. You probably don't want to wait any later than that or else your winter savory may not have a chance to fully mature. You can get started a few weeks earlier by starting your winter savory indoors.

Last Frost Date

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

It's important to remember that USDA zone info for Portland is just an average and the actual date of last frost is different every year. Half of the time in Portland there is a last frost after March 15 so be sure to be ready to cover your winter savory if you have a surprise late frost.

USDA Zone Info for Portland

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 Portland

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