One of the first steps you take when you are figuring out 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 best time to plant nolana in Portland can be determined by referring to the USDA zone info.

Planting Calendar for Nolana

Frost tolerance for nolana:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

Nolana are not cold tolerant which tells us that you have to wait until it warms up after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant nolana in Portland 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 nolana and expect a good harvest is probably September. If you wait any later than that and your nolana may not have a chance to grow to maturity. You can get started a little bit earlier by starting your nolana indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in Portland. You should expect an average low temperature of 25°F in the coldest months of winter.

Since the USDA zone info for Portland is not always accurate the actual date of last frost will vary from year to year. Half of the time in Portland there is a last frost after February 15 so make sure that you are prepared to protect your nolana if you have a surprise late frost.

USDA Zone Info for Portland

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Portland

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