One of the first steps you take when you are making a decision about 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 earliest that you can plant endive in Portland can be figured out by using the USDA zone info.

Planting Calendar for Endive

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

Endive do well in some cold which means that you can plant them a bit earlier in the year than other frost tender plants.

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

The last month that you can plant endive and expect a good harvest is probably October. If you wait any later than that and your endive may not have a chance to really do well. You can get started a little bit earlier by starting your endive indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in Portland. It might get as low as 25°F during the coldest months of winter.

Since the USDA zone info for Portland is just an average the actual date of last frost will vary from year to year. Since half of the time in Portland you get a frost after February 15 be ready to cover your endive in the event of a 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.